At the heart of the 2008 Harley-Davidson FLSTF Softail Fat Boy custom - cruiser motorcycle, Harley-Davidson features a 1573.3 cc (96 cu in) air-cooled v2, four-stroke configuration. In factory specification, maximum torque reaches 120 Nm (88.5 lb-ft) at 3,300 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 Softail Fat Boy 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 4.35 L/100 km provides an estimated theoretical range of roughly 435 km (270 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 4 indexed model years from 2007 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~435 km (270 mi)
Engine
Displacement1573.3 ccm (96.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Torque120.0 Nm (12.2 kgf-m or 88.5 ft.lbs) @ 3300 RPM
Compression9.2:1
Bore x Stroke95.3 x 111.3 mm (3.8 x 4.4 inches)
Fuel SystemInjection. 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)
Seat Height698 mm (27.5 inches) If adjustable, lowest setting.
Overall Length2395 mm (94.3 inches)
Fuel Capacity18.92 litres (5.00 US gallons)
Other
Color OptionsVivid Black, Pewter Pearl, Pacific Blue Pearl, Black Pearl, Dark Blue Denim (New), Candy Red Sunglo (New) 105th Anniversary Copper Pearl/Vivid Black, Purple Haze (Custom), Copperhead Pearl and Red Hot (Custom), Golden Glow and Black Glow (Custom)
Notes
Fat 200mm rear tire; 17-in. front wheel; fat 1-1/4´ internally wired handlebar with giant bare knuckle risers; Silver, Bullet Hole Disc Cast Aluminum wheels; two-tone seat and bullet laced valance; custom graphics package on front fender, fuel tank and rear fender
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.
