2011 Harley-Davidson FLSTFB Fat Boy Special Technical Analysis & Specification Breakdown
At the heart of the 2011 Harley-Davidson FLSTFB Fat Boy Special custom - cruiser motorcycle, Harley-Davidson pairs a 1584 cc (96.7 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, maximum torque reaches 126 Nm (92.9 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 111.1 mm (3.8 x 4.4 inches) with a 9.2:1 compression ratio.
On the scales, the FLSTFB Fat Boy Special measures 318 kg (701 lbs) dry. Rider ergonomics and chassis geometry center around a 680 mm (26.8 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,630 mm (64.2 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 2 indexed model years from 2011 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
680 mm (26.8 in)
Engine
Displacement1584.0 ccm (96.66 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsTwin Cam 96B
Torque126.0 Nm (12.8 kgf-m or 92.9 ft.lbs) @ 3500 RPM
Compression9.2:1
Bore x Stroke95.3 x 111.1 mm (3.8 x 4.4 inches)
Valves/Cylinder2
Fuel SystemInjection. Electronic Sequential Port Fuel Injection (ESPFI)
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
