Built around Harley-Davidson's custom - cruiser motorcycle platform, the 2008 Harley-Davidson FLSTF Fat Boy Firefighter relies on a 1573.3 cc (96 cu in) air-cooled v2, four-stroke powerplant. In factory specification, maximum torque reaches 123.4 Nm (91 lb-ft) at 3,000 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 FLSTF Fat Boy Firefighter measures 323.9 kg (714 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 698 mm (27.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,638 mm (64.5 in) wheelbase engineered for planted straight-line stability. The 18.92-liter (5 US gal) fuel tank paired with a rated consumption of 4.7 L/100 km provides an estimated theoretical range of roughly 403 km (250 miles) between fill-ups.
Theoretical Range
~403 km (250 mi)
Engine
Displacement1573.3 ccm (96.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Torque123.4 Nm (12.6 kgf-m or 91.0 ft.lbs) @ 3000 RPM
Compression9.2:1
Bore x Stroke95.3 x 111.3 mm (3.8 x 4.4 inches)
Fuel SystemInjection
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchMulti-plate with diaphragm spring in oil bath
Performance
Fuel Consumption4.70 litres/100 km (21.3 km/l or 50.05 mpg)
Greenhouse Gases109.0 CO2 g/km. (CO2 - Carbon dioxide emission)
ExhaustChrome, over/under shotgun duals
Chassis
Rake32.0°
Trail147 mm (5.8 inches)
Wheelbase1638 mm (64.5 inches)
Wheels & Brakes
Front Tyre140/75-R17
Rear Tyre200/55-R17
Dimensions & Weight
Dry Weight314.8 kg (694.0 pounds)
Weight incl.323.9 kg (714.0 pounds)
Seat Height698 mm (27.5 inches) If adjustable, lowest setting.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
