Engineered by Harley-Davidson for the custom - cruiser motorcycle segment, the 2008 Harley-Davidson FXDF Dyna Fat Bob 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 3,125 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 FXDF Dyna Fat Bob measures 318.9 kg (703 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 688 mm (27.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,621 mm (63.8 in) wheelbase engineered for planted straight-line stability. The 19.3-liter (5.1 US gal) fuel tank paired with a rated consumption of 4.43 L/100 km provides an estimated theoretical range of roughly 436 km (271 miles) between fill-ups.
Within MotoLibrary's Harley-Davidson archive, this model family spans 3 indexed model years from 2008 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~436 km (271 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) @ 3125 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 Consumption4.43 litres/100 km (22.6 km/l or 53.10 mpg)
Greenhouse Gases102.8 CO2 g/km. (CO2 - Carbon dioxide emission)
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.
