2008 Harley-Davidson FLHR Road King Technical Analysis & Specification Breakdown
Built around Harley-Davidson's touring motorcycle platform, the 2008 Harley-Davidson FLHR Road King features a 1573.3 cc (96 cu in) air-cooled v2, four-stroke configuration. In factory specification, maximum torque reaches 125.6 Nm (92.6 lb-ft) at 3,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 95.3 x 111.3 mm (3.8 x 4.4 inches) with a 9.2:1 compression ratio.
On the scales, the FLHR Road King measures 352.4 kg (777 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 759 mm (29.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,613 mm (63.5 in) wheelbase engineered for planted straight-line stability. The 22.71-liter (6 US gal) fuel tank paired with a rated consumption of 4.35 L/100 km provides an estimated theoretical range of roughly 522 km (324 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 10 indexed model years from 2000 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~522 km (324 mi)
Engine
Displacement1573.3 ccm (96.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Torque125.6 Nm (12.8 kgf-m or 92.6 ft.lbs) @ 3500 RPM
Compression9.2:1
Bore x Stroke95.3 x 111.3 mm (3.8 x 4.4 inches)
Fuel SystemInjection. Electronic Sequential Port Fuel Injection (ESPFI)
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
Performance
Fuel Consumption4.35 litres/100 km (23.0 km/l or 54.07 mpg)
Greenhouse Gases100.9 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustChrome, cross-over exhaust w/ dual mufflers and taper End Caps
Chassis
Rake26.0°
Trail157 mm (6.2 inches)
Wheelbase1613 mm (63.5 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front TyreMT90-B16
Rear TyreMT85-B16
Front BrakesSingle disc. Brembo. 4-piston calipers
Rear BrakesSingle disc. Brembo. 4-piston calipers
Dimensions & Weight
Dry Weight335.7 kg (740.0 pounds)
Weight incl.352.4 kg (777.0 pounds)
Seat Height759 mm (29.9 inches) If adjustable, lowest setting.
Overall Length2380 mm (93.7 inches)
Fuel Capacity22.71 litres (6.00 US gallons)
Other
StarterElectric
Color OptionsVivid Black, Black Pearl, White Gold Pearl, Dark Blue Pearl (New), Crimson Red Sunglo (New), Two-Tone Suede Blue Pearl/Vivid Black, Two-Tone White Gold Pearl/Pewter Pearl (New), Two-Tone Crimson Red Sunglo/Candy Red Sunglo, Two-Tone Olive Pearl/Vivid Blac
Notes
Large Hiawatha headlamp and chrome nacelle; black powder-coated engine with chrome covers; detachable windshield; GTX-Nylon alloy lockable hard saddlebags; tank-mounted speedometer; air-adjustable rear suspension
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.
