It appears you're interested in specifications for the Harley-Davidson FLSTFB Fat Boy Special. This Custom / cruiser model is powered by a Twin Cam 96B V2, four-stroke engine with 1584.00 ccm (96.66 cubic inches) of actual displacement before 9.2:1 compression. Fueling is metered via Injection. Electronic Sequential Port Fuel Injection (ESPFI) allowing this machine to produce its horsepower and 126.00 Nm (12.8 kgf-m or 92.9 ft.lbs) torque. According to our records engine heat of the Harley-Davidson FLSTFB Fat Boy Special is moderated by Air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 140/75-R17 and the rear is 200/55-R17 . The entire package is supported by the frame, Mild steel tubular frame; rectangular section backbone; stamped, cast,. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. 4-piston front brakes and Single disc rear brakes. The Harley-Davidson FLSTFB Fat Boy Special was launched in 2011, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.