Positioned in Harley-Davidson's sport motorcycle lineup, the 1955 Harley-Davidson KHK features a 833 cc (50.8 cu in) air-cooled flathead 45 degree engine. mirror polished ports and cylinder heads configuration. In factory specification, peak output is rated at 38 HP (27.7 kW), transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 45.6 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the KHK measures 199.6 kg (440 lbs) dry, translating to a power-to-weight ratio of 0.19 HP/kg (5.25 kg per horsepower). Rider ergonomics and chassis geometry center around a 1 mm (0 in) wheelbase engineered for quick, flickable steering geometry. The 17-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 153 km/h (95 mph).
Within MotoLibrary's Harley-Davidson archive, this model family spans 3 indexed model years from 1954 to 1956, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
