At the heart of the 2003 Harley-Davidson FLHRCI Road King Classic custom - cruiser motorcycle, Harley-Davidson pairs a 1449 cc (88.4 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 67 HP (48.9 kW) at 5,200 rpm while maximum torque reaches 110 Nm (81.1 lb-ft) at 3,300 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 46.2 HP per liter and a 1,900 rpm working window between peak torque (3,300 rpm) and peak power (5,200 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the FLHRCI Road King Classic measures 345 kg (761 lbs) wet (curb), translating to a power-to-weight ratio of 0.19 HP/kg (5.15 kg per horsepower). Rider ergonomics and chassis geometry center around a 729 mm (28.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,592 mm (62.7 in) wheelbase engineered for planted straight-line stability. The 18.8-liter (5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Harley-Davidson archive, this model family spans 6 indexed model years from 2000 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
46.2 HP/L
Power-to-Weight
0.19 HP/kg (5.15 kg/HP)
Power Band Window
3,300–5,200 rpm
Standover Height
729 mm (28.7 in)
Engine
Displacement1449.0 ccm (88.42 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power67.0 HP (48.9 kW)) @ 5200 RPM
Torque110.0 Nm (11.2 kgf-m or 81.1 ft.lbs) @ 3300 RPM
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
