Harley Davidson Motorcycle, Green Bay, Wisconsin, United States Of America.

Harley-Davidson, Inc., H-D, or Harley, is an American motorcycle manufacturer founded in 1903 in Milwaukee, Wisconsin. Along with Indian, it was one of two major American motorcycle manufacturers to survive the Great Depression.[3] The company has survived numerous ownership arrangements, subsidiary arrangements, periods of poor economic health and product quality, and intense global competition[4] to become one of the world’s largest motorcycle manufacturers and an iconic brand widely known for its loyal following. There are owner clubs and events worldwide, as well as a company-sponsored, brand-focused museum.

Harley-Davidson is noted for a style of customization that gave rise to the chopper motorcycle style.[5] The company traditionally marketed heavyweight, air-cooled cruiser motorcycles with engine displacements greater than 700 cc, but it has broadened its offerings to include more contemporary VRSC (2002) and middle-weight Street (2015) platforms.

Harley-Davidson manufactures its motorcycles at factories in York, Pennsylvania; Milwaukee, Wisconsin; Kansas City, Missouri (closed May 2019); Manaus, Brazil; and Bawal, India. Construction of a new plant in Thailand began in late 2018.[6] The company markets its products worldwide, and also licenses and markets merchandise under the Harley-Davidson brand, among them apparel, home décor and ornaments, accessories, toys, scale models of its motorcycles, and video games based on its motorcycle line and the community.

In 1901, 20-year-old William S. Harley drew up plans for a small engine with a displacement of 7.07 cubic inches (116 cc) and four-inch (102 mm) flywheels[7][8] designed for use in a regular pedal-bicycle frame. Over the next two years, he and his childhood friend Arthur Davidson worked on their motor-bicycle using the northside Milwaukee machine shop at the home of their friend Henry Melk. It was finished in 1903 with the help of Arthur’s brother Walter Davidson. Upon testing their power-cycle, Harley and the Davidson brothers found it unable to climb the hills around Milwaukee without pedal assistance, and they wrote off their first motor-bicycle as a valuable learning experiment.[9]

The three began work on a new and improved machine with an engine of 24.74 cubic inches (405 cc) with 9.75 in (24.8 cm) flywheels weighing 28 lb (13 kg). Its advanced loop-frame pattern was similar to the 1903 Milwaukee Merkel motorcycle designed by Joseph Merkel, later of Flying Merkel fame. The bigger engine and loop-frame design took it out of the motorized bicycle category and marked the path to future motorcycle designs. They also received help with their bigger engine from outboard motor pioneer Ole Evinrude, who was then building gas engines of his own design for automotive use on Milwaukee’s Lake Street.

Prototype
The prototype of the new loop-frame Harley-Davidson was assembled in a 10 ft × 15 ft (3.0 m × 4.6 m) shed in the Davidson family backyard.[10][11] Most of the major parts, however, were made elsewhere, including some probably fabricated at the West Milwaukee railshops where oldest brother William A. Davidson was toolroom foreman. This prototype machine was functional by September 8, 1904, when it competed in a Milwaukee motorcycle race held at State Fair Park. Edward Hildebrand rode it and placed fourth in the race.[10]

In January 1905, the company placed small advertisements in the Automobile and Cycle Trade Journal offering bare Harley-Davidson engines to the do-it-yourself trade. By April, they were producing complete motorcycles on a very limited basis. That year, Harley-Davidson dealer Carl H. Lang of Chicago sold three bikes from the five built in the Davidson backyard shed. Years later, the company moved the original shed to the Juneau Avenue factory where it stood for many decades as a tribute.

In 1906, Harley and the Davidson brothers built their first factory on Chestnut Street (later Juneau Avenue),[12] at the current location of Harley-Davidson’s corporate headquarters. The first Juneau Avenue plant was a 40 ft × 60 ft (12 m × 18 m) single-story wooden structure. The company produced about 50 motorcycles that year.

1907 model.

Harley-Davidson 1,000 cc HT 1916
In 1907, William S. Harley graduated from the University of Wisconsin–Madison with a degree in mechanical engineering. That year, they expanded the factory with a second floor and later with facings and additions of Milwaukee pale yellow ("cream") brick. With the new facilities, production increased to 150 motorcycles in 1907. The company was officially incorporated that September. They also began selling their motorcycles to police departments around this time, a market that has been important to them ever since.[13] In 1907, William A. Davidson quit his job as tool foreman for the Milwaukee Road railroad and joined the Motor Company.

Production in 1905 and 1906 were all single-cylinder models with 26.84-cubic-inch (440 cc) engines. In February 1907, they displayed a prototype model at the Chicago Automobile Show with a 45-degree V-Twin engine. Very few V-Twin models were built between 1907 and 1910. These first V-Twins displaced 53.68 cubic inches (880 cc) and produced about 7 horsepower (5.2 kW). This gave about double the power of the first singles, and top speed was about 60 mph (100 km/h). Production jumped from 450 motorcycles in 1908 to 1,149 machines in 1909.[14]

Harley-Davidson works in 1911
In 1911, the company introduced an improved V-Twin model with a displacement of 49.48 cubic inches (811 cc) and mechanically operated intake valves, as opposed to the "automatic" intake valves used on earlier V-Twins that opened by engine vacuum. It was smaller than earlier twins but gave better performance. After 1913, the majority of bikes produced by Harley-Davidson were V-Twin models.

In 1912, Harley-Davidson introduced their patented "Ful-Floteing Seat", which was suspended by a coil spring inside the seat tube.[15] The spring tension could be adjusted to suit the rider’s weight, and more than 3 inches (76 mm) of travel was available.[16] Harley-Davidson used seats of this type until 1958.[17]

By 1913, the yellow brick factory had been demolished and a new five-story structure had been built on the site which took up two blocks along Juneau Avenue and around the corner on 38th Street. Despite the competition, Harley-Davidson was already pulling ahead of Indian and dominated motorcycle racing after 1914. Production that year swelled to 16,284 machines.

Ralph Hepburn on his Harley racing bike in 1919
World War I
In 1917, the United States entered World War I and the military demanded motorcycles for the war effort.[18] Harleys had already been used by the military in the Pancho Villa Expedition[19][20] but World War I was the first time that it was adopted for military issue, first with the British Model H produced by Triumph Motorcycles Ltd in 1915.[21] The U.S. military purchased over 20,000 motorcycles from Harley-Davidson.[22]

Bicycles
Harley-Davidson launched a line of bicycles in 1917 in hopes of recruiting customers for its motorcycles. Models included the traditional diamond frame men’s bicycle, a step-through frame 3–18 "Ladies Standard", and a 5–17 "Boy Scout" for youth. The effort was discontinued in 1923 because of disappointing sales.[23] The bicycles were built for Harley-Davidson in Dayton, Ohio by the Davis Machine Company from 1917 to 1921, when Davis stopped manufacturing bicycles.[24]

1920s

Harley-Davidson 1000 cc HT 1923
By 1920, Harley-Davidson was the largest motorcycle manufacturer in the world, with 28,189 machines produced and dealers in 67 countries.[25] In 1921, Otto Walker set a record on a Harley-Davidson as the first motorcycle to win a race at an average speed greater than 100 mph (160 km/h).[26][27]

Harley-Davidson put several improvements in place during the 1920s, such as a new 74 cubic inch (1,212.6 cc) V-Twin introduced in 1921, and the "teardrop" gas tank in 1925. They added a front brake in 1928, although only on the J/JD models.[28] In the late summer of 1929, Harley-Davidson introduced its 45-cubic-inch (737 cc) flathead V-Twin to compete with the Indian 101 Scout and the Excelsior Super X.[29] This was the "D" model produced from 1929 to 1931.[30] Riders of Indian motorcycles derisively referred to it as the "three cylinder Harley" because the generator was upright and parallel to the front cylinder.[31]

Great Depression

Harley-Davidson 1,200 cc SV 1931
The Great Depression began a few months after the introduction of their 45 cu in (740 cm3) model. Harley-Davidson’s sales fell from 21,000 in 1929 to 3,703 in 1933. Despite this, Harley-Davidson unveiled a new lineup for 1934, which included a flathead engine and Art Deco styling.[32]

In order to survive the remainder of the Depression, the company manufactured industrial powerplants based on their motorcycle engines. They also designed and built a three-wheeled delivery vehicle called the Servi-Car, which remained in production until 1973.[29]

Harley-Davidson UL
In the mid-1930s, Alfred Rich Child opened a production line in Japan with the 74 cu in (1,210 cm3) VL. The Japanese license-holder, Sankyo Seiyaku Corporation, severed its business relations with Harley-Davidson in 1936 and continued manufacturing the VL under the Rikuo name.[33]

Harley-Davidson dealer in Texas, ca. 1930–1945
An 80 cubic inches (1,300 cm3) flathead engine was added to the line in 1935, by which time the single-cylinder motorcycles had been discontinued.[34]

In 1936, the 61E and 61EL models with the "Knucklehead" OHV engines were introduced.[35] Valvetrain problems in early Knucklehead engines required a redesign halfway through its first year of production and retrofitting of the new valvetrain on earlier engines.[36]

By 1937, all Harley-Davidson flathead engines were equipped with dry-sump oil recirculation systems similar to the one introduced in the "Knucklehead" OHV engine. The revised 74 cubic inches (1,210 cm3) V and VL models were renamed U and UL, the 80 cu in (1,300 cm3) VH and VLH to be renamed UH and ULH, and the 45 cu in (740 cm3) R to be renamed W.[35]

In 1941, the 74-cubic-inch "Knucklehead" was introduced as the F and the FL. The 80 cu in (1,300 cm3) flathead UH and ULH models were discontinued after 1941, while the 74-cubic-inchU & UL flathead models were produced up to 1948.[35]

World War II

Harley copied the BMW R71 to produce its XA model.
One of only two American cycle manufacturers to survive the Great Depression,[37][38] Harley-Davidson again produced large numbers of motorcycles for the US Army in World War II and resumed civilian production afterwards, producing a range of large V-twin motorcycles that were successful both on racetracks and for private buyers.

Harley-Davidson, on the eve of World War II, was already supplying the Army with a military-specific version of its 45 cubic inches (740 cm3) WL line, called the WLA. The A in this case stood for "Army". Upon the outbreak of war, the company, along with most other manufacturing enterprises, shifted to war work. More than 90,000 military motorcycles, mostly WLAs and WLCs (the Canadian version) were produced, many to be provided to allies.[39] Harley-Davidson received two Army-Navy "E" Awards, one in 1943 and the other in 1945, which were awarded for Excellence in Production.

Harley-Davidson produced the WLC for the Canadian military
Shipments to the Soviet Union under the Lend-Lease program numbered at least 30,000.[40] The WLAs produced during all four years of war production generally have 1942 serial numbers. Production of the WLA stopped at the end of World War II, but was resumed from 1950 to 1952 for use in the Korean War.

The U.S. Army also asked Harley-Davidson to produce a new motorcycle with many of the features of BMW’s side-valve and shaft-driven R71. Harley-Davidson largely copied the BMW engine and drive train and produced the shaft-driven 750 cc 1942 Harley-Davidson XA. This shared no dimensions, no parts or no design concepts (except side valves) with any prior Harley-Davidson engine. Due to the superior cooling of the flat-twin engine with the cylinders across the frame, Harley’s XA cylinder heads ran 100 °F (56 °C) cooler than its V-twins.[41] The XA never entered full production: the motorcycle by that time had been eclipsed by the Jeep as the Army’s general purpose vehicle, and the WLA—already in production—was sufficient for its limited police, escort, and courier roles. Only 1,000 were made and the XA never went into full production. It remains the only shaft-driven Harley-Davidson ever made.

Small Harleys: Hummers and Aermacchis

Harley-Davidson Hummer
See also: Harley-Davidson Hummer and Harley-Davidson Topper
As part of war reparations, Harley-Davidson acquired the design of a small German motorcycle, the DKW RT 125, which they adapted, manufactured, and sold from 1948 to 1966.[42] Various models were made, including the Hummer from 1955 to 1959, but they are all colloquially referred to as "Hummers" at present.[43] BSA in the United Kingdom took the same design as the foundation of their BSA Bantam.[44]

1971 Aermacchi Harley-Davidson Turismo Veloce
In 1960, Harley-Davidson consolidated the Model 165 and Hummer lines into the Super-10, introduced the Topper scooter,[45] and bought fifty percent of Aermacchi’s motorcycle division.[45][46] Importation of Aermacchi’s 250 cc horizontal single began the following year.[46][47][48] The bike bore Harley-Davidson badges and was marketed as the Harley-Davidson Sprint.[47][48] The engine of the Sprint was increased to 350 cc in 1969[46][49] and would remain that size until 1974, when the four-stroke Sprint was discontinued.[49]

After the Pacer and Scat models were discontinued at the end of 1965, the Bobcat became the last of Harley-Davidson’s American-made two-stroke motorcycles. The Bobcat was manufactured only in the 1966 model year.[50]

Harley-Davidson replaced their American-made lightweight two-stroke motorcycles with the Italian Aermacchi-built two-stroke powered M-65, M-65S, and Rapido. The M-65 had a semi-step-through frame and tank. The M-65S was a M-65 with a larger tank that eliminated the step-through feature. The Rapido was a larger bike with a 125 cc engine.[51] The Aermacchi-built Harley-Davidsons became entirely two-stroke powered when the 250 cc two-stroke SS-250 replaced the four-stroke 350 cc Sprint in 1974.[52]

Harley-Davidson purchased full control of Aermacchi’s motorcycle production in 1974 and continued making two-stroke motorcycles there until 1978, when they sold the facility to Cagiva, owned by the Castiglioni family.[45]

Overseas
Established in 1918, the oldest continuously operating Harley-Davidson dealership outside of the United States is in Australia.[53] Sales in Japan started in 1912[53] then in 1929, Harley-Davidsons were produced in Japan under license to the company Rikuo (Rikuo Internal Combustion Company)[54] under the name of Harley-Davidson and using the company’s tooling, and later under the name Rikuo. Production continued until 1958.[55][56]

Tarnished reputation

Replica of the "Captain America bike" from the film Easy Rider
In 1952, following their application to the U.S. Tariff Commission for a 40 percent tax on imported motorcycles, Harley-Davidson was charged with restrictive practices.[57]

AMF H-D Electra Glide
In 1969, American Machine and Foundry (AMF) bought the company,[58][59] streamlined production, and slashed the workforce. This tactic resulted in a labor strike and cost-cutting produced lower-quality bikes.[4] The bikes were expensive and inferior in performance, handling, and quality to Japanese motorcycles. Sales and quality declined, and the company almost went bankrupt.[4] The "Harley-Davidson" name was mocked as "Hardly Ableson", "Hardly Driveable", and "Hogly Ferguson",[60] and the nickname "Hog" became pejorative.[61]

The early ’70s saw the introduction of what the motoring press called the Universal Japanese Motorcycle in North America, that revolutionized the industry and made motorcycling in America more accessible during the 1970s and 1980s.[62]

In 1977, following the successful manufacture of the Liberty Edition to commemorate America’s bicentennial in 1976,[63] Harley-Davidson produced what has become one of its most controversial models, the Harley-Davidson Confederate Edition. The bike was essentially a stock Harley-Davidson with Confederate-specific paint and details.[64]

Restructuring and revival
In 1981, AMF sold the company to a group of 13 investors led by Vaughn Beals and Willie G. Davidson for $80 million.[65] Inventory was strictly controlled using the just-in-time system.[66]

In the early eighties, Harley-Davidson claimed that Japanese manufacturers were importing motorcycles into the US in such volume as to harm or threaten to harm domestic producers.[67] After an investigation by the U.S. International Trade Commission, President Reagan in 1983 imposed a 45 percent tariff on imported bikes with engine capacities greater than 700 cc. Harley-Davidson subsequently rejected offers of assistance from Japanese motorcycle makers.[68] However, the company did offer to drop the request for the tariff in exchange for loan guarantees from the Japanese.[69][70]

Rather than trying to match the Japanese, the new management deliberately exploited the "retro" appeal of the machines, building motorcycles that deliberately adopted the look and feel of their earlier machines and the subsequent customizations of owners of that era. Many components such as brakes, forks, shocks, carburetors, electrics and wheels were outsourced from foreign manufacturers and quality increased, technical improvements were made, and buyers slowly returned.

Harley-Davidson bought the "Sub Shock" cantilever-swingarm rear suspension design from Missouri engineer Bill Davis and developed it into its Softail series of motorcycles, introduced in 1984 with the FXST Softail.[71]

In response to possible motorcycle market loss due to the aging of baby-boomers, Harley-Davidson bought luxury motorhome manufacturer Holiday Rambler in 1986.[72] In 1996, the company sold Holiday Rambler to the Monaco Coach Corporation.[73]

The "Sturgis" model, boasting a dual belt-drive, was introduced initially in 1980 and was made for three years. This bike was then brought back as a commemorative model in 1991. By 1990, with the introduction of the "Fat Boy", Harley-Davidson once again became the sales leader in the heavyweight (over 750 cc) market.[74] At the time of the Fat Boy model introduction, a story rapidly spread that its silver paint job and other features were inspired by the B-29; and Fat Boy was a combination of the names of the atomic bombs Fat Man and Little Boy.[75] However, the Urban Legend Reference Pages lists this story as an urban legend.[76][77]

1993 and 1994 saw the replacement of FXR models with the Dyna (FXD), which became the sole rubber mount FX Big Twin frame in 1994. The FXR was revived briefly from 1999 to 2000 for special limited editions (FXR2, FXR3 & FXR4).[78]

Construction started on the $75 million, 130,000 square-foot (12,000 m2) Harley-Davidson Museum in the Menomonee Valley of Milwaukee, Wisconsin on June 1, 2006. It opened in 2008 and houses the company’s vast collection of historic motorcycles and corporate archives, along with a restaurant, café and meeting space.[79]

Buell Motorcycle Company
Main article: Buell Motorcycle Company

Buell Lightning XB9SX
Harley-Davidson’s association with sportbike manufacturer Buell Motorcycle Company began in 1987 when they supplied Buell with fifty surplus XR1000 engines. Buell continued to buy engines from Harley-Davidson until 1993, when Harley-Davidson bought 49 percent of the Buell Motorcycle Company.[80] Harley-Davidson increased its share in Buell to ninety-eight percent in 1998, and to complete ownership in 2003.[81]

In an attempt to attract newcomers to motorcycling in general and to Harley-Davidson in particular, Buell developed a low-cost, low-maintenance motorcycle. The resulting single-cylinder Buell Blast was introduced in 2000,[82] and was made through 2009, which, according to Buell, was to be the final year of production.[83] The Buell Blast was the training vehicle for the Harley-Davidson Rider’s Edge New Rider Course from 2000 until May 2014, when the company re-branded the training academy and started using the Harley-Davidson Street 500 motorcycles. In those 14 years, more than 350,000 participants in the course learned to ride on the Buell Blast.[84]

On October 15, 2009, Harley-Davidson Inc. issued an official statement that it would be discontinuing the Buell line and ceasing production immediately.[85] The stated reason was to focus on the Harley-Davidson brand. The company refused to consider selling Buell.[86] Founder Erik Buell subsequently established Erik Buell Racing and continued to manufacture and develop the company’s 1125RR racing motorcycle.[87]

First overseas factory in Brazil
In 1998 the first Harley-Davidson factory outside the US opened in Manaus, Brazil, taking advantage of the free economic zone there. The location was positioned to sell motorcycles in the southern hemisphere market.[88][89]

100th anniversary
Harley-Davidson hired Elton John to headline their 100th anniversary event on September 1, 2003. Other performers included The Doobie Brothers, Kid Rock, and Tim McGraw.[90]

Claims of stock price manipulation

Harley-Davidson Inc (NYSE:HOG) stock price (source: ZenoBank.com)
During its period of peak demand, during the late 1990s and early first decade of the 21st century, Harley-Davidson embarked on a program of expanding the number of dealerships throughout the country. At the same time, its current dealers typically had waiting lists that extended up to a year for some of the most popular models. Harley-Davidson, like the auto manufacturers, records a sale not when a consumer buys their product, but rather when it is delivered to a dealer. Therefore, it is possible for the manufacturer to inflate sales numbers by requiring dealers to accept more inventory than desired in a practice called channel stuffing. When demand softened following the unique 2003 model year, this news led to a dramatic decline in the stock price. In April 2004 alone, the price of HOG shares dropped from more than $60 to less than $40. Immediately prior to this decline, retiring CEO Jeffrey Bleustein profited $42 million on the exercise of employee stock options.[91] Harley-Davidson was named as a defendant in numerous class action suits filed by investors who claimed they were intentionally defrauded by Harley-Davidson’s management and directors.[92] By January 2007, the price of Harley-Davidson shares reached $70.

Problems with Police Touring models
Starting around 2000, several police departments started reporting problems with high speed instability on the Harley-Davidson Touring motorcycles.[93] A Raleigh, North Carolina police officer, Charles Paul, was killed when his 2002 police touring motorcycle crashed after reportedly experiencing a high speed wobble.[94] The California Highway Patrol conducted testing of the Police Touring motorcycles in 2006. The CHP test riders reported experiencing wobble or weave instability while operating the motorcycles on the test track.[95]

2007 strike
On February 2, 2007, upon the expiration of their union contract, about 2,700 employees at Harley-Davidson Inc.’s largest manufacturing plant in York, Pennsylvania, went on strike after failing to agree on wages and health benefits.[96][97] During the pendency of the strike, the company refused to pay for any portion of the striking employees’ health care.[98]

The day before the strike, after the union voted against the proposed contract and to authorize the strike, the company shut down all production at the plant. The York facility employs more than 3,200 workers, both union and non-union.[99]

Harley-Davidson announced on February 16, 2007, that it had reached a labor agreement with union workers at its largest manufacturing plant, a breakthrough in the two-week-old strike.[100] The strike disrupted Harley-Davidson’s national production and was felt in Wisconsin, where 440 employees were laid off, and many Harley suppliers also laid off workers because of the strike.[101]

MV Agusta Group
On July 11, 2008, Harley-Davidson announced they had signed a definitive agreement to acquire the MV Agusta Group for US$109 million (€70M). MV Agusta Group contains two lines of motorcycles: the high-performance MV Agusta brand and the lightweight Cagiva brand.[102][103] The acquisition was completed on August 8.[104][105]

On October 15, 2009, Harley-Davidson announced that it would divest its interest in MV Agusta.[85] Harley-Davidson Inc. sold Italian motorcycle maker MV Agusta to Claudio Castiglioni – a member of the family that had purchased Aermacchi from H-D in 1978 – for a reported 3 euros, ending the transaction in the first week of August 2010. Castiglioni was MV Agusta’s former owner, and had been MV Agusta’s chairman since Harley-Davidson bought it in 2008. As part of the deal, Harley-Davidson put $26M into MV Agusta’s accounts, essentially giving Castiglioni $26M to take the brand.[106][107]

Operations in India
Main article: Harley-Davidson India
In August 2009, Harley-Davidson announced plans to enter the market in India and started selling motorcycles there in 2010. The company established a subsidiary, Harley-Davidson India, in Gurgaon, near Delhi, in 2011 and created an Indian dealer network.[108][109] On September 24, 2020, Harley Davidson announced that it would discontinue its sales and manufacturing operations in India due to weak demand and sales. The move involves $75 million in restructuring costs, 70 layoffs and the closure of its Bawal plant in northern India.[110]

Financial crisis
According to Interbrand, the value of the Harley-Davidson brand fell by 43 percent to $4.34 billion in 2009. The fall in value is believed to be connected to the 66 percent drop in the company profits in two-quarters of the previous year.[111] On April 29, 2010, Harley-Davidson stated that they must cut $54 million in manufacturing costs from its production facilities in Wisconsin, and that they would explore alternative U.S. sites to accomplish this. The announcement came in the wake of a massive company-wide restructuring, which began in early 2009 and involved the closing of two factories, one distribution center, and the planned elimination of nearly 25 percent of its total workforce (around 3,500 employees). The company announced on September 14, 2010, that it would remain in Wisconsin.[112]

Motorcycle engines

1,450 cubic centimetres (88 cu in) V-twin
Main article: Harley-Davidson engine timeline
The classic Harley-Davidson engines are V-twin engines, with a 45° angle between the cylinders. The crankshaft has a single pin, and both pistons are connected to this pin through their connecting rods.[5]

This 45° angle is covered under several United States patents and is an engineering tradeoff that allows a large, high-torque engine in a relatively small space. It causes the cylinders to fire at uneven intervals and produces the choppy "potato-potato" sound so strongly linked to the Harley-Davidson brand.

To simplify the engine and reduce costs, the V-twin ignition was designed to operate with a single set of points and no distributor. This is known as a dual fire ignition system, causing both spark plugs to fire regardless of which cylinder was on its compression stroke, with the other spark plug firing on its cylinder’s exhaust stroke, effectively "wasting a spark". The exhaust note is basically a throaty growling sound with some popping. The 45° design of the engine thus creates a plug firing sequencing as such: The first cylinder fires, the second (rear) cylinder fires 315° later, then there is a 405° gap until the first cylinder fires again, giving the engine its unique sound.[113]

Harley-Davidson has used various ignition systems throughout its history – be it the early points and condenser system, (Big Twin up to 1978 and Sportsters up to 1978), magneto ignition system used on some 1958 to 1969 Sportsters, early electronic with centrifugal mechanical advance weights, (all models 1978 and a half to 1979), or the late electronic with transistorized ignition control module, more familiarly known as the black box or the brain, (all models 1980 to present).

Starting in 1995, the company introduced Electronic Fuel Injection (EFI) as an option for the 30th anniversary edition Electra Glide.[114] EFI became standard on all Harley-Davidson motorcycles, including Sportsters, upon the introduction of the 2007 product line.[115]

In 1991, Harley-Davidson began to participate in the Sound Quality Working Group, founded by Orfield Labs, Bruel and Kjaer, TEAC, Yamaha, Sennheiser, SMS and Cortex. This was the nation’s first group to share research on psychological acoustics. Later that year, Harley-Davidson participated in a series of sound quality studies at Orfield Labs, based on recordings taken at the Talladega Superspeedway, with the objective to lower the sound level for EU standards while analytically capturing the "Harley Sound".[citation needed] This research resulted in the bikes that were introduced in compliance with EU standards for 1998.

On February 1, 1994, the company filed a sound trademark application for the distinctive sound of the Harley-Davidson motorcycle engine: "The mark consists of the exhaust sound of applicant’s motorcycles, produced by V-twin, common crankpin motorcycle engines when the goods are in use". Nine of Harley-Davidson’s competitors filed comments opposing the application, arguing that cruiser-style motorcycles of various brands use a single-crankpin V-twin engine which produce a similar sound.[116] These objections were followed by litigation. In June 2000, the company dropped efforts to federally register its trademark.[117][118]

Big V-twins
F-head, also known as JD, pocket valve and IOE (intake over exhaust), 1914–1929 (1,000 cc), and 1922–1929 (1,200 cc)
Flathead, 1930–1949 (1,200 cc) and 1935–1941 (1,300 cc).
Knucklehead, 1936–1947 61 cubic inch (1,000 cc), and 1941–1947 74 cubic inch (1,200 cc)
Panhead, 1948–1965 61 cubic inch (1,000 cc), and 1948–1965, 74 cubic inch (1,200 cc)
Shovelhead, 1966–1984, 74 cubic inch (1,200 cc) and 80 cubic inch (1,338 cc) since late 1978
Evolution (a.k.a. "Evo" and "Blockhead"), 1984–1999, 80 cubic inch (1,340 cc)
Twin Cam (a.k.a. "Fathead" as named by American Iron Magazine) 1999–2017, in the following versions:
Twin Cam 88, 1999–2006, 88 cubic inch (1,450 cc)
Twin Cam 88B, counterbalanced version of the Twin Cam 88, 2000–2006, 88 cubic inch (1,450 cc)
Twin Cam 95, since 2000, 95 cubic inch (1,550 cc) (engines for early C.V.O. models)
Twin Cam 96, since 2007. As of 2012, only the Street Bob and Super Glide Custom Models still use the 96.96 cubic inch (1,584 cc)
Twin Cam 103, 2003–2006, 2009, 103 cubic inch (1,690 cc) (engines for C.V.O. models), Standard on 2011 Touring models: Ultra Limited, Road King Classic and Road Glide Ultra and optional on the Road Glide Custom and Street Glide. Standard on most 2012 models excluding Sportsters and 2 Dynas (Street Bob and Super Glide Custom). Standard on all 2014 dyna models.
Twin Cam 110, 2007–2017, 110 cubic inch (1,800 cc) (engines for C.V.O. models, 2016 Soft Tail Slim S; FatBoy S, Low Rider S, and Pro-Street Breakout)
Milwaukee-Eight
Standard 107 cu in (1,746 cc): Standard on touring model year 2017+ and Softail models 2018+.[119]
Twin-cooled 107 cu in (1,746 cc): Optional on some touring and trike model year 2017+.[120]
Twin-cooled 114 cu in (1,868 cc): Optional on touring and trike model year 2017+, standard on 2017 CVO models.[120]
Twin-cooled 117 cu in (1,923 cc): Standard on 2018 CVO models[121]
Small V-twins

Evolution Sportster
D Model, 1929–1931, 750 cc
R Model, 1932–1936, 750 cc
W Model, 1937–1952, 750 cc, solo (2 wheel, frame only)
G (Servi-Car) Model, 1932–1973, 750 cc
K Model, 1952–1953, 750 cc
KH Model, 1954–1956, 900 cc
Ironhead, 1957–1971, 883 cc; 1972–1985, 1,000 cc
Evolution, since 1986, 883 cc, 1,100 cc and 1,200 cc
Revolution engine

Revolution engine in V-Rod
The Revolution engine is based on the VR-1000 Superbike race program, developed by Harley-Davidson’s Powertrain Engineering with Porsche helping to make the engine suitable for street use . It is a liquid cooled, dual overhead cam, internally counterbalanced 60 degree V-twin engine with a displacement of 69 cubic inch (1,130 cc), producing 115 hp (86 kW) at 8,250 rpm at the crank, with a redline of 9,000 rpm.[122][123] It was introduced for the new VRSC (V-Rod) line in 2001 for the 2002 model year, starting with the single VRSCA (V-Twin Racing Street Custom) model.[124][125] The Revolution marks Harley’s first collaboration with Porsche since the V4 Nova project, which, like the V-Rod, was a radical departure from Harley’s traditional lineup until it was cancelled by AMF in 1981 in favor of the Evolution engine.[126]

A 1,250 cc Screamin’ Eagle version of the Revolution engine was made available for 2005 and 2006, and was present thereafter in a single production model from 2005 to 2007. In 2008, the 1,250 cc Revolution Engine became standard for the entire VRSC line. Harley-Davidson claims 123 hp (92 kW) at the crank for the 2008 VRSCAW model. The VRXSE Destroyer is equipped with a stroker (75 mm crank) Screamin’ Eagle 79 cubic inch (1,300 cc) Revolution Engine, producing more than 165 hp (123 kW).

750 cc and 500 cc versions of the Revolution engine are used in Harley-Davidson’s Street line of light cruisers.[37] These motors, named the Revolution X, use a single overhead cam, screw and locknut valve adjustment, a single internal counterbalancer, and vertically split crankcases; all of these changes making it different from the original Revolution design.[127]

Düsseldorf-Test
An extreme endurance test of the Revolution engine was performed in a dynometer installation at the Harley-Davidson factory in Milwaukee, simulating the German Autobahn (highways without general speed limit) between the Porsche research and development center in Weissach, near Stuttgart to Düsseldorf. Uncounted samples of engines failed, until an engine successfully passed the 500-hour nonstop run. This was the benchmark for the engineers to approve the start of production for the Revolution engine, which was documented in the Discovery channel special Harley-Davidson: Birth of the V-Rod, October 14, 2001.[128]

Single-cylinder engines

1928 Harley-Davidson single-cylinder motorcycle
IOE singles
The first Harley-Davidson motorcycles were powered by single-cylinder IOE engines with the inlet valve operated by engine vacuum, based on the DeDion-Bouton pattern.[129] Singles of this type continued to be made until 1913, when a pushrod and rocker system was used to operate the overhead inlet valve on the single, a similar system having been used on their V-twins since 1911.[130] Single-cylinder motorcycle engines were discontinued in 1918.[131]

Flathead and OHV singles
Single-cylinder engines were reintroduced in 1925 as 1926 models.[132] These singles were available either as flathead engines or as overhead valve engines[133] until 1930, after which they were only available as flatheads.[132] The flathead single-cylinder motorcycles were designated Model A for engines with magneto systems only and Model B for engines with battery and coil systems, while overhead valve versions were designated Model AA and Model BA respectively, and a magneto-only racing version was designated Model S.[133] This line of single-cylinder motorcycles ended production in 1934.[132]

Two-stroke singles
See also: Harley-Davidson Hummer
Model families
Modern Harley-branded motorcycles fall into one of seven model families: Touring, Softail, Dyna, Sportster, Vrod, Street and LiveWire. These model families are distinguished by the frame, engine, suspension, and other characteristics.

Touring
See also: Harley-Davidson FL

Hamburg Police Electra Glide
Touring models use Big-Twin engines and large-diameter telescopic forks. All Touring designations begin with the letters FL, e.g., FLHR (Road King) and FLTR (Road Glide).

The touring family, also known as "dressers" or "baggers", includes Road King, Road Glide, Street Glide and Electra Glide models offered in various trims. The Road Kings have a "retro cruiser" appearance and are equipped with a large clear windshield. Road Kings are reminiscent of big-twin models from the 1940s and 1950s. Electra Glides can be identified by their full front fairings. Most Electra Glides sport a fork-mounted fairing referred to as the "Batwing" due to its unmistakable shape. The Road Glide and Road Glide Ultra Classic have a frame-mounted fairing, referred to as the "Sharknose". The Sharknose includes a unique, dual front headlight.

Touring models are distinguishable by their large saddlebags, rear coil-over air suspension and are the only models to offer full fairings with radios and CBs. All touring models use the same frame, first introduced with a Shovelhead motor in 1980, and carried forward with only modest upgrades until 2009, when it was extensively redesigned. The frame is distinguished by the location of the steering head in front of the forks and was the first H-D frame to rubber mount the drivetrain to isolate the rider from the vibration of the big V-twin.

Electra Glide "Ultra Classic"
The frame was modified for the 1993 model year when the oil tank went under the transmission and the battery was moved inboard from under the right saddlebag to under the seat. In 1997, the frame was again modified to allow for a larger battery under the seat and to lower seat height. In 2007, Harley-Davidson introduced the 96 cubic inches (1,570 cubic centimetres)[134] Twin Cam 96 engine, as well the six-speed transmission to give the rider better speeds on the highway.

In 2006, Harley introduced the FLHX Street Glide, a bike designed by Willie G. Davidson to be his personal ride, to its touring line.[135]

In 2008, Harley added anti-lock braking systems and cruise control as a factory installed option on all touring models (standard on CVO and Anniversary models).[136] Also new for 2008 is the 6-US-gallon (23 l; 5.0 imp gal) fuel tank for all touring models. 2008 also brought throttle-by-wire to all touring models.

For the 2009 model year, Harley-Davidson redesigned the entire touring range with several changes, including a new frame, new swingarm, a completely revised engine-mounting system, 17-inch (430 mm) front wheels for all but the FLHRC Road King Classic, and a 2–1–2 exhaust. The changes result in greater load carrying capacity, better handling, a smoother engine, longer range and less exhaust heat transmitted to the rider and passenger.[137][138] Also released for the 2009 model year is the FLHTCUTG Tri-Glide Ultra Classic, the first three-wheeled Harley since the Servi-Car was discontinued in 1973. The model features a unique frame and a 103-cubic-inch (1,690 cc) engine exclusive to the trike.[139]

In 2014, Harley-Davidson released a redesign for specific touring bikes and called it "Project Rushmore".[140] Changes include a new 103CI High Output engine, one handed easy open saddlebags and compartments, a new Boom! Box Infotainment system with either 4.3-inch (10 cm) or 6.5-inch (16.5 cm) screens featuring touchscreen functionality [6.5-inch (16.5 cm) models only], Bluetooth (media and phone with approved compatible devices), available GPS and SiriusXM, Text-to-Speech functionality (with approved compatible devices) and USB connectivity with charging. Other features include ABS with Reflex linked brakes, improved styling, Halogen or LED lighting and upgraded passenger comfort.

Softail
Main article: Softail

2002 Softail Heritage Classic
These big-twin motorcycles capitalize on Harley’s strong value on tradition. With the rear-wheel suspension hidden under the transmission, they are visually similar to the "hardtail" choppers popular in the 1960s and 1970s, as well as from their own earlier history. In keeping with that tradition, Harley offers Softail models with "Heritage" styling that incorporate design cues from throughout their history and used to offer "Springer" front ends on these Softail models from the factory.

Designation
Softail models utilize the big-twin engine (F) and the Softail chassis (ST).

Softail models that use 21-inch (530 mm) Front Wheels have designations that begin with FX, e.g., FXSTB (Night Train), FXSTD (Deuce), and FXSTS (Springer).
Softail models that use 16-inch (410 mm) Front Wheels have designations beginning with FL, e.g., FLSTF (Fat Boy), FLSTC (Heritage Softail Classic), FLSTN (Softail Deluxe) and FLS (Softail Slim).
Softail models that use Springer forks with a 21-inch (530 mm) wheel have designations that begin with FXSTS, e.g., FXSTS (Springer Softail) and FXSTSB (Bad Boy).
Softail models that use Springer forks with a 16-inch (410 mm) wheel have designations that begin with FLSTS, e.g., FLSTSC (Springer Classic) and FLSTSB (Cross Bones).
Dyna
Main article: Harley-Davidson Super Glide

2005 Dyna Super Glide Custom.
Dyna-frame motorcycles were developed in the 1980s and early 1990s and debuted in the 1991 model year with the FXDB Sturgis offered in limited edition quantities. In 1992 the line continued with the limited edition FXDB Daytona and a production model FXD Super Glide. The new DYNA frame featured big-twin engines and traditional styling. They can be distinguished from the Softail by the traditional coil-over suspension that connects the swingarm to the frame, and from the Sportster by their larger engines. On these models, the transmission also houses the engine’s oil reservoir.

Prior to 2006, Dyna models typically featured a narrow, XL-style 39mm front fork and front wheel, as well as footpegs which the manufacturer included the letter "X" in the model designation to indicate. This lineup traditionally included the Super Glide (FXD), Super Glide Custom (FXDC), Street Bob (FXDB), and Low Rider (FXDL). One exception was the Wide Glide (FXDWG), which featured thicker 41mm forks and a narrow front wheel, but positioned the forks on wider triple-trees that give a beefier appearance. In 2008, the Dyna Fat Bob (FXDF) was introduced to the Dyna lineup, featuring aggressive styling like a new 2–1–2 exhaust, twin headlamps, a 180 mm rear tire, and, for the first time in the Dyna lineup, a 130 mm front tire. For the 2012 model year, the Dyna Switchback (FLD) became the first Dyna to break the tradition of having an FX model designation with floorboards, detachable painted hard saddlebags, touring windshield, headlight nacelle and a wide front tire with full fender. The new front end resembled the big-twin FL models from 1968 to 1971.

The Dyna family used the 88-cubic-inch (1,440 cc) twin cam from 1999 to 2006. In 2007, the displacement was increased to 96 cubic inches (1,570 cc) as the factory increased the stroke to 4.375 inches (111.1 mm). For the 2012 model year, the manufacturer began to offer Dyna models with the 103-cubic-inch (1,690 cc) upgrade. All Dyna models use a rubber-mounted engine to isolate engine vibration. Harley discontinued the Dyna platform in 2017 for the 2018 model year, having been replaced by a completely-redesigned Softail chassis; some of the existing models previously released by the company under the Dyna nameplate have since been carried over to the new Softail line.[141]

Designation
Dyna models utilize the big-twin engine (F), footpegs noted as (X) with the exception of the 2012 FLD Switchback, a Dyna model which used floorboards as featured on the Touring (L) models, and the Dyna chassis (D). Therefore, except for the FLD from 2012 to 2016, all Dyna models have designations that begin with FXD, e.g., FXDWG (Dyna Wide Glide) and FXDL (Dyna Low Rider).

Sportster
Main article: Harley-Davidson Sportster

2002 Sportster 883 Custom

2003 Harley-Davidson XL1200 Custom Anniversary Edition
Introduced in 1957, the Sportster family were conceived as racing motorcycles, and were popular on dirt and flat-track race courses through the 1960s and 1970s. Smaller and lighter than the other Harley models, contemporary Sportsters make use of 883 cc or 1,200 cc Evolution engines and, though often modified, remain similar in appearance to their racing ancestors.[142]

Up until the 2003 model year, the engine on the Sportster was rigidly mounted to the frame. The 2004 Sportster received a new frame accommodating a rubber-mounted engine. This made the bike heavier and reduced the available lean angle, while it reduced the amount of vibration transmitted to the frame and the rider, providing a smoother ride for rider and passenger.[143]

In the 2007 model year, Harley-Davidson celebrated the 50th anniversary of the Sportster and produced a limited edition called the XL50, of which only 2000 were made for sale worldwide. Each motorcycle was individually numbered and came in one of two colors, Mirage Pearl Orange or Vivid Black. Also in 2007, electronic fuel injection was introduced to the Sportster family, and the Nightster model was introduced in mid-year. In 2009, Harley-Davidson added the Iron 883 to the Sportster line, as part of the Dark Custom series. In the 2008 model year, Harley-Davidson released the XR1200 Sportster in Europe, Africa, and the Middle East. The XR1200 had an Evolution engine tuned to produce 91 bhp (68 kW), four-piston dual front disc brakes, and an aluminum swing arm. Motorcyclist featured the XR1200 on the cover of its July 2008 issue and was generally positive about it in their "First Ride" story, in which Harley-Davidson was repeatedly asked to sell it in the United States.[144] One possible reason for the delayed availability in the United States was the fact that Harley-Davidson had to obtain the "XR1200" naming rights from Storz Performance, a Harley customizing shop in Ventura, Calif.[145] The XR1200 was released in the United States in 2009 in a special color scheme including Mirage Orange highlighting its dirt-tracker heritage. The first 750 XR1200 models in 2009 were pre-ordered and came with a number 1 tag for the front of the bike, autographed by Kenny Coolbeth and Scott Parker and a thank you/welcome letter from the company, signed by Bill Davidson.[citation needed] The XR1200 was discontinued in model year 2013.

Designation
Except for the street-going XR1000 of the 1980s and the XR1200, most Sportsters made for street use have the prefix XL in their model designation. For the Sportster Evolution engines used since the mid-1980s, there have been two engine sizes. Motorcycles with the smaller engine are designated XL883, while those with the larger engine were initially designated XL1100. When the size of the larger engine was increased from 1,100 cc to 1,200 cc, the designation was changed accordingly from XL1100 to XL1200. Subsequent letters in the designation refer to model variations within the Sportster range, e.g. the XL883C refers to an 883 cc Sportster Custom, while the XL1200S designates the now-discontinued 1200 Sportster Sport.

VRSC
Main article: Harley-Davidson VRSC

2003 VRSCA V-Rod
Introduced in 2001 and produced until 2017,[146] the VRSC muscle bike family bears little resemblance to Harley’s more traditional lineup. Competing against Japanese and American muscle bikes in the upcoming muscle bike/power cruiser segment, the "V-Rod" makes use of the revolution engine that, for the first time in Harley history, incorporates overhead cams and liquid cooling. The V-Rod is visually distinctive, easily identified by the 60-degree V-Twin engine, the radiator and the hydroformed frame members that support the round-topped air cleaner cover. The VRSC platform was also used for factory drag-racing motorcycles.

In 2008, Harley added the anti-lock braking system as a factory installed option on all VRSC models.[136] Harley also increased the displacement of the stock engine from 1,130 to 1,250 cc (69 to 76 cu in), which had only previously been available from Screamin’ Eagle, and added a slipper clutch as standard equipment.

VRSC models include:

VRSCA: V-Rod (2002–2006), VRSCAW: V-Rod (2007–2010), VRSCB: V-Rod (2004–2005), VRSCD: Night Rod (2006–2008), VRSCDX: Night Rod Special (2007–2014), VRSCSE: Screamin’ Eagle CVO V-Rod (2005), VRSCSE2: Screamin’ Eagle CVO V-Rod (2006), VRSCR: Street Rod (2006–2007), VRSCX: Screamin’ Eagle Tribute V-Rod (2007), VRSCF: V-Rod Muscle (2009–2014).
VRSC models utilize the Revolution engine (VR), and the street versions are designated Street Custom (SC). After the VRSC prefix common to all street Revolution bikes, the next letter denotes the model, either A (base V-Rod: discontinued), AW (base V-Rod + W for Wide with a 240 mm rear tire), B (discontinued), D (Night Rod: discontinued), R (Street Rod: discontinued), SE and SEII(CVO Special Edition), or X (Special edition). Further differentiation within models are made with an additional letter, e.g., VRSCDX denotes the Night Rod Special.

VRXSE
The VRXSE V-Rod Destroyer is Harley-Davidson’s production drag racing motorcycle, constructed to run the quarter mile in less than ten seconds. It is based on the same revolution engine that powers the VRSC line, but the VRXSE uses the Screamin’ Eagle 1,300 cc "stroked" incarnation, featuring a 75 mm crankshaft, 105 mm Pistons, and 58 mm throttle bodies.

The V-Rod Destroyer is not a street legal motorcycle. As such, it uses "X" instead of "SC" to denote a non-street bike. "SE" denotes a CVO Special Edition.

Street
Main article: Harley-Davidson Street
The Street, Harley-Davidson’s newest platform and their first all new platform in thirteen years, was designed to appeal to younger riders looking for a lighter bike at a cheaper price.[37] The Street 750 model was launched in India at the 2014 Indian Auto Expo, Delhi-NCR on February 5, 2014. The Street 750 weighs 218 kg and has a ground clearance of 144 mm giving it the lowest weight and the highest ground clearance of Harley-Davidson motorcycles currently available.[147]

The Street 750 uses an all-new, liquid-cooled, 60° V-twin engine called the Revolution X. In the Street 750, the engine displaces 749 cc (45.7 cu in) and produces 65 Nm at 4,000 rpm. A six speed transmission is used.[147]

The Street 750 and the smaller-displacement Street 500 has been available since late 2014.[37] Street series motorcycles for the North American market will be built in Harley-Davidson’s Kansas City, Missouri plant,[37] while those for other markets around the world will be built completely in their plant in Bawal, India.[37][147]

LiveWire
Main article: Harley-Davidson LiveWire
Harley-Davidson’s LiveWire, released in 2019, is their first electric vehicle. The high-voltage battery provides a minimum city range of 98 miles (158 km).[148] The LiveWire targets a different type of customer than their classic V-twin powered motorcycles.[149]

In March 2020, a Harley-Davidson LiveWire was used to break the 24-hour distance record for an electric motorcycle. The bike traveled a reported 1,723 km (1,079 miles) in 23 hours and 48 minutes. The LiveWire offers a Level 1 slow recharge, which uses a regular wall outlet to refill an empty battery overnight, or a quick Level 3 DC Fast Charge. The Fast Charge fills the battery most of the way in about 40 minutes. Swiss rider Michel von Tell used the Level 3 charging to make the 24-hour ride.[150]

Custom Vehicle Operations
Main article: Harley-Davidson CVO
Custom Vehicle Operations (CVO) is a team within Harley-Davidson that produces limited-edition customizations of Harley’s stock models. Every year since 1999, the team has selected two to five of the company’s base models and added higher-displacement engines, performance upgrades, special-edition paint jobs, more chromed or accented components, audio system upgrades, and electronic accessories to create high-dollar, premium-quality customizations for the factory custom market.[151] The models most commonly upgraded in such a fashion are the Ultra Classic Electra Glide, which has been selected for CVO treatment every year from 2006 to the present, and the Road King, which was selected in 2002, 2003, 2007, and 2008. The Dyna, Softail, and VRSC families have also been selected for CVO customization.

Environmental record
The Environmental Protection Agency conducted emissions-certification and representative emissions test in Ann Arbor, Michigan, in 2005. Subsequently, Harley-Davidson produced an "environmental warranty". The warranty ensures each owner that the vehicle is designed and built free of any defects in materials and workmanship that would cause the vehicle to not meet EPA standards.[152] In 2005, the EPA and the Pennsylvania Department of Environmental Protection (PADEP) confirmed Harley-Davidson to be the first corporation to voluntarily enroll in the One Clean-Up Program. This program is designed for the clean-up of the affected soil and groundwater at the former York Naval Ordnance Plant. The program is backed by the state and local government along with participating organizations and corporations.[153]

Paul Gotthold, Director of Operations for the EPA, congratulated the motor company:

Harley-Davidson has taken their environmental responsibilities very seriously and has already made substantial progress in the investigation and cleanup of past contamination. Proof of Harley’s efforts can be found in the recent EPA determination that designates the Harley property as ‘under control’ for cleanup purposes. This determination means that there are no serious contamination problems at the facility. Under the new One Cleanup Program, Harley, EPA, and PADEP will expedite the completion of the property investigation and reach a final solution that will permanently protect human health and the environment.[153]

Harley-Davidson also purchased most of Castalloy, a South Australian producer of cast motorcycle wheels and hubs. The South Australian government has set forth "protection to the purchaser (Harley-Davidson) against environmental risks".[154]

In August 2016 Harley-Davidson settled with the EPA for $12 million, without admitting wrongdoing, over the sale of after-market "super tuners".[155][156] Super tuners were devices, marketed for competition, which enabled increased performance of Harley-Davidson products. However, the devices also modified the emission control systems, producing increased hydrocarbon and nitrogen oxide. Harley-Davidson is required to buy back and destroy any super tuners which do not meet Clean Air Act requirements and spend $3 million on air pollution mitigation.

Sponsorship
The Milwaukee Bucks of the National Basketball Association sport a Harley Davidson sponsor patch on their jerseys.

Brand culture

Harley-Davidson Cafe theme restaurant located on the Las Vegas Strip
According to a recent Harley-Davidson study, in 1987 half of all Harley riders were under age 35.[157] Now, only 15 percent of Harley buyers are under 35,[157] and as of 2005, the median age had risen to 46.7.[158][159][160][161] In 2008, Harley-Davidson stopped disclosing the average age of riders; at this point it was 48 years old.[162]

In 1987, the median household income of a Harley-Davidson rider was $38,000. By 1997, the median household income for those riders had more than doubled, to $83,000.[163][clarification needed]

Many Harley-Davidson Clubs exist nowadays around the world;[164] the oldest one, founded in 1928, is in Prague.[165]

Harley-Davidson attracts a loyal brand community,[166] with licensing of the Harley-Davidson logo accounting for almost 5 percent of the company’s net revenue ($41 million in 2004).[167] Harley-Davidson supplies many American police forces with their motorcycle fleets.[168]

From its founding, Harley-Davidson had worked to brand its motorcycles as respectable and refined products, with ads that showed what motorcycling writer Fred Rau called "refined-looking ladies with parasols, and men in conservative suits as the target market".[169][170] The 1906 Harley-Davidson’s effective, and polite, muffler was emphasized in advertisements with the nickname "The Silent Gray Fellow".[170][171] That began to shift in the 1960s, partially in response to the clean-cut motorcyclist portrayed in Honda’s "You meet the nicest people on a Honda" campaign, when Harley-Davidson sought to draw a contrast with Honda by underscoring the more working-class, macho, and even a little anti-social attitude associated with motorcycling’s dark side. With the 1971 FX Super Glide, the company embraced, rather than distanced, itself from chopper style, and the counterculture custom Harley scene.[172] Their marketing cultivated the "bad boy" image of biker and motorcycle clubs, and to a point, even outlaw or one-percenter motorcycle clubs.[169][170]

Origin of "Hog" nickname
Beginning in 1920, a team of farm boys, including Ray Weishaar, who became known as the "hog boys", consistently won races. The group had a live hog as their mascot. Following a win, they would put the hog on their Harley and take a victory lap.[173] In 1983, the Motor Company formed a club for owners of its product, taking advantage of the long-standing nickname by turning "hog" into the acronym HOG, for Harley Owners Group. Harley-Davidson attempted to trademark "hog", but lost a case against an independent Harley-Davidson specialist, The Hog Farm of West Seneca, New York,[174] in 1999, when the appellate panel ruled that "hog" had become a generic term for large motorcycles and was therefore unprotectable as a trademark.[175]

On August 15, 2006, Harley-Davidson Inc. had its NYSE ticker symbol changed from HDI to HOG.[176]

Bobbers
Harley-Davidson FL "big twins" normally had heavy steel fenders, chrome trim, and other ornate and heavy accessories. After World War II, riders wanting more speed would often shorten the fenders or take them off completely to reduce the weight of the motorcycle. These bikes were called "bobbers" or sometimes "choppers", because parts considered unnecessary were chopped off. Those who made or rode choppers and bobbers, especially members of motorcycle clubs like the Hells Angels, referred to stock FLs as "garbage wagons".[177]

Harley Owners Group
Main article: Harley Owners Group
Harley-Davidson established the Harley Owners Group (HOG) in 1983 to build on the loyalty of Harley-Davidson enthusiasts as a means to promote a lifestyle alongside its products. The HOG also opened new revenue streams for the company, with the production of tie-in merchandise offered to club members, numbering more than one million. Other motorcycle brands,[178] and other and consumer brands outside motorcycling, have also tried to create factory-sponsored community marketing clubs of their own.[179] HOG members typically spend 30 percent more than other Harley owners on such items as clothing and Harley-Davidson-sponsored events.[180]

In 1991, HOG went international, with the first official European HOG Rally in Cheltenham, England.[181] Today, more than one million members and more than 1400 chapters worldwide make HOG the largest factory-sponsored motorcycle organization in the world.[182]

HOG benefits include organized group rides, exclusive products and product discounts, insurance discounts, and the Hog Tales newsletter. A one-year full membership is included with the purchase of a new, unregistered Harley-Davidson.[183]

In 2008, HOG celebrated its 25th anniversary in conjunction with the Harley 105th in Milwaukee, Wisconsin.

3rd Southern HOG Rally set to bring together largest gathering of Harley-Davidson owners in South India. More than 600 Harley-Davidson Owners expected to ride to Hyderabad from across 13 HOG Chapters[184]

Factory tours and museum

Harley-Davidson Museum in Milwaukee
Harley-Davidson offers factory tours at four of its manufacturing sites, and the Harley-Davidson Museum, which opened in 2008, exhibits Harley-Davidson’s history, culture, and vehicles, including the motor company’s corporate archives.[185][186]

York, Pennsylvania – Vehicle Operations: Manufacturing site for Touring class, Softail, and custom vehicles.
Tomahawk, Wisconsin – Tomahawk Operations: Facility that makes sidecars, saddlebags, windshields, and more.
Kansas City, Missouri – Vehicle and Powertrain Operations: Manufacturing site of Sportster, VRSC, and other vehicles.
Menomonee Falls, Wisconsin – Pilgrim Road Powertrain Operations plant, two types of tours.
Milwaukee, Wisconsin – Harley-Davidson Museum: Archive; exhibits of people, products, culture and history; restaurant & café; and museum store.
Due to the consolidation of operations, the Capitol Drive Tour Center in Wauwatosa, Wisconsin, was closed in 2009.

Historic register designations
Some of the company’s buildings have been listed on state and national historic registers, including:

Juneau Avenue factory – added to National Register of Historic Places on November 9, 1994.[187][188]
Factory No. 7 – added to Wisconsin State Register of Historic Places on August 14, 2020.[189]
Anniversary celebrations

Clockwise from top left: William S. Harley, William A. Davidson, Walter Davidson, Sr., Arthur Davidson
Beginning with Harley-Davidson’s 90th anniversary in 1993, Harley-Davidson has had celebratory rides to Milwaukee called the "Ride Home".[190] This new tradition has continued every five years, and is referred to unofficially as "Harleyfest", in line with Milwaukee’s other festivals (Summerfest, German fest, Festa Italiana, etc.). This event brings Harley riders from all around the world.[191][192] The 105th anniversary celebration was held on August 28–31, 2008,[193] and included events in Milwaukee, Waukesha, Racine, and Kenosha counties, in Southeast Wisconsin. The 110th anniversary celebration was held on August 29–31, 2013. The 115th anniversary was held in Prague, Czech Republic, the home country of the oldest existing Harley Davidson Club, on July 5–8, 2018 and attracted more than 100.000 visitors and 60.000 bikes.[194]

Labor Hall of Fame
William S. Harley, Arthur Davidson, William A. Davidson and Walter Davidson, Sr were, in 2004, inducted into the Labor Hall of Fame for their accomplishments for the H-D company and its workforce.[195]

Television drama
The company’s origins were dramatized in a 2016 miniseries entitled Harley and the Davidsons, starring Robert Aramayo as William Harley, Bug Hall as Arthur Davidson[196] and Michiel Huisman as Walter Davidson, and premiered on the Discovery Channel as a "three-night event series" on September 5, 2016.

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