Harley Davidson  ID Categories

  1. 1936-1947 offered the E and EL which was a 61 ci KNUCKLEHEAD with a 4 speed transmission,the tank mounted gauges.In 1936 2000 E-series were produced.
  2. 1937 offered the U series  which was the 74ci  flat head,the ULH was a 80 ci flat head. The “L” in these id’s represents a high compression engine when it is in the second character as in ULH this would be high compression 80 ci engine.
  3. 1942 Harley produced the WLA These were 45ci  wartime motorcycles for the military.The W-series was fitted with special equipment for wartime use blackout headlights and tail lights that only produced a sliver of light.These motorcycles were sold after the war as surplus for as little as $25.Which added to the customization trend that had begun.
  4. 1942 XA was built for the military for desert use but were not put into service do the creation of the jeep.1000 of the bikes were built.Some of the modifications made to this bike were a horizontally opposed cylinder engine,plunger rear suspension,large oil bath air cleaner,longer forks with added shock absorbers and a shaft drive.The speedometer read to 120 but had a warning plaque not to exceed 65.
  5. 1947 changes on the EL were a revised instrument panel with siamesed generator and oil light, “tombstone” taillight, an automotive brake pedal and floorboards.Also offered this year was a 74 ci Knucklehead coded as an FL.
  6. 1947 FL SERVI-CAR  had a front fender similar to those used on Harley military motorcycles.
  7. 1948 FL introduced the PANHEAD.Improvements were aluminum heads and hydraulic lifters.The shift pattern on the 4 speed transmission was reversed first gear was closest to the driver.Serrated exhaust pipes were also added at this time.
  8. 1948 WL was a 45 ci  FLATHEAD engine it was the only FLATHEAD that Harley Davidson produced at this time.The styling was the same as the PANHEAD.The only way tell them apart was buy looking at the engine.
  9. 1948 S-125 this was based on a design from DKW of Germany.It was a 125 cc two stroke engine,with a 3 speed transmission and a girder front end.This was listed as a beginners bike, 10,000 were sold in the first 7 months of 1947.It survived for 13 years in Harleys lineup.
  10. 1948 WR was built for dirt class racing.This bike had no lights,horn,fenders or brakes.It also had a 3 speed hand shifted transmission.
  11. 1949 FL was the introduction of the HYDRA-GLIDE.These were named for the modern telescopic forks which replaced the old leading link arrangement.This also allowed for handle bars that could now be adjusted for the rider.
  12. 1951 FL POLICE this was designed for police use.they were not available to civilians.Most were painted Police Silver and had added equipment like a fire extinguisher mounted on the rear cargo box.
  13. 1952 FL adopted the modern foot-shift hand clutch.The fuel tanks were enlarged and the engine gained chrome plated rings.
  14. 1955 FL had new cast tank badges.also produced this year was the FLH with a higher compression engine with hotter cams and polished ports it produced 10-percent more horsepower.
  15. 1956 KHK  this had a 55 ci engine.The K meant this had lower “sport” style handle bars,less chrome and a higher performance camshaft.It also had a modern swing arm rear suspension with coil over shocks.This was the last FLATHEAD motorcycle Harley Davidson would offer.
  16. 1957 XL this was the first SPORTSTER model Harley Davidson designed.It had a 55 ci  V-TWIN.The instrument panel was mounted on the top of the forks it contained a speedometer,oil and generator warning lights.Sportster engines are 1 piece engine and tranny unlike a big twin which is an independent engine and transmission.
  17. 1957 FL POLICE had the old style hand shift foot clutch.First gear was toward the rider fourth was all the way forward.Also it had round tank badges instead of the script that was painted on the tank.
  18. 1957 FLH the “H” denotes higher compression.This model also had a higher performance camshaft and polished ports it was advertised at 58-60 horsepower.
  19. 1958 XL there a was horse power increase on this model with the addition of larger valves.The XL’s instrument panel carried a dual keyed switch for ignition and lights.This model had a right side shifter instead of a left side like an FL model.
  20. 1958 FL was the introduction of the swing arm rear suspension.There were 2 models made this year the FL which was a low compression engine and the FLH which was the supped up model.
  21. 1959 XLCH was a performance on/off road model version of the SPORTSTER.The XLCH was lighter than the XLH.It featured a magneto-generator,high exhaust pipes and a smaller tank nicknamed a “peanut “tank.These also featured the  “eyebrow” headlight nacelle a SPORTSTER trademark.
  22. 1960 FLHF this had a larger headlight nacelle similar to SPORTSTER.The “H” stands for high performance and the end “F” is for  footshift.The tank badges had an arrowhead theme.Also offered on this bike was “2-into-2” exhaust.Which was 1 pipe on either side of the bike instead of 2 on the same side.
  23. 1964 FLH this is listed as a duo-glide with little change since 1958.
  24. 1964 XLCH was offered as a starter bike and performance oriented due to it’s light weight.The only gauge on these was the speedometer.This had the same tank badges now as the FL.
  25. 1965 FL was the introduction of the electric starter.So the DUO-GLIDE became known as the ELECTRA GLIDE.This was the last model of PANHEAD engines.
  26. 1966 FLHFB this was the introduction of the SHOVELHEAD engine.Which had a new carburetor design which produced around 5 more horsepower.Harley Davidson revised the tank badge again for this model.
  27. 1966 KR was a Harley Davidson model built for dirt track racing or road race models.The road race one had rear suspension,thinner tires and a larger fuel tank.This model was powered by a 45 ci flathead  V-Twin.It had a peanut tank and an “R” on the oil tank for racing.
  28. 1966 Sprint this motorcycle was designed by Harley Davidson with Aermacchi of Italy.The engine was a 250 cc horizontal four stroke single.In 1966 the engine was enlarged to 350 cc and the sprint listed as an “SS”.Production ended on these models in1974.The engine case said Harley Davidson the engine was built by Aermacchi .
  29. 1967 XLH this was the first year Sportster have an electric starter though they left the kick starter on just in case.It had a larger fuel tank,gauges hung just above the tank and a two person seat.
  30. 1968 CR250 is an offshoot of the sprint.It was designed for racing which meant no brake lights or fenders.Also this motorcycle was a rigid frame only weighing 200 lbs.The 250 cc engine gained power from a better carburetor,higher compression and a free flow exhaust.
  31. 1968 XLCH this is a Sportster model with a peanut tank,lowered handlebars and a matte-black covering on the top of the tank.Some people felt CH stood for COMPETITION HOT.
  32. 1968 XLH this was a Sportster designed to be a cruiser.It was equipped with hard shell saddlebags, padded backrest and a windshield.
  33. 1970 XLH a Sportster with a redesigned fuel tank.This year was fired by a timer and coil setup instead of the magneto setup found on the XLCH.
  34. 1971 Baja 100 was a 100 cc dirt bike it had a short wheelbase  and it was light weight which made it fairly competitive in races.
  35. 1971 FX SUPER GLIDE is the first customized motorcycle offered off the showroom floor.It had shovel engine and used the shovel frame but the front end was from an XL SPORTSTER which was smaller and lighter.What actually made this a SUPERGLIDE was the fiberglass boat-tail seat/fender and the buck-horn handlebars.These models only came with a kick start until 1974 when an electric start was offered.
  36. 1971 XLH SPORTSTER had the boat tail seat removed for a normal fender although you could still get the boat tail setup as an option for $60.
  37. 1973 FL only sold around 1000 models as it was outsold by the FLH (high compression model).These models had front disc brakes.
  38. 1973 X-90 was one of two mini bikes offered this year the other was the Z-90 which had folding handlebars.Both had 90cc 2-stroke engines, ten inch cast wheels and drum brakes.They could be made street legal since they were equipped with a speedometer and lights.
  39. 1975 SS-250 when it was offered it was the largest street version offered.On/off road models carried an SX prefix.Engine sizes were 175 and 250cc both were 2-stroke engines.This engine was based on a Yamaha design.
  40. 1975 XR -750 Engine was based on the Sportster  V-Twin but the cylinders heads were aluminum instead of being iron, the exhaust pipes were routed high to the left and it had Dual Mikuki Carburetors.At wide open it throttle it put out 90 HP.