Built around Harley-Davidson's touring motorcycle platform, the 2005 Harley-Davidson FLHRSI Road King Custom features a 1449 cc (88.4 cu in) air-cooled v2, four-stroke configuration. In factory specification, maximum torque reaches 109 Nm (80.4 lb-ft) at 3,400 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 95.3 x 101.6 mm (3.8 x 4.0 inches) with a 8.8:1 compression ratio.
On the scales, the FLHRSI Road King Custom measures 332 kg (732 lbs) dry. Rider ergonomics and chassis geometry center around a 663 mm (26.1 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 18.9-liter (5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Harley-Davidson archive, this model family spans 3 indexed model years from 2004 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
663 mm (26.1 in)
Engine
Displacement1449.0 ccm (88.42 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Torque109.0 Nm (11.1 kgf-m or 80.4 ft.lbs) @ 3400 RPM
Compression8.8:1
Bore x Stroke95.3 x 101.6 mm (3.8 x 4.0 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection (ESPFI )
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingAir
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
ClutchMulti-plate clutch with diaphragm spring in oil bath
Performance
ExhaustCrossover duals
Chassis
Rake26.0°
Wheelbase1592 mm (62.7 inches)
Ground Clearance119 mm (4.7 inches)
Wheels & Brakes
Front TyreMT90-B16
Rear TyreMU85-B16
Front BrakesDouble disc
Front Brake Ø292 mm (11.5 inches)
Rear BrakesSingle disc
Rear Brake Ø292 mm (11.5 inches)
Dimensions & Weight
Dry Weight332.0 kg (731.9 pounds)
Seat Height663 mm (26.1 inches) If adjustable, lowest setting.
Overall Length2440 mm (96.1 inches)
Fuel Capacity18.90 litres (4.99 US gallons)
Other
Color OptionsVivid black, smokey gold pearl, black cherry pearl, black pearl, lava red sunglo, glacier white pearl, rich sunglo blue, yellow pearl
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.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
