It appears you're interested in specifications for the Harley-Davidson XL 1200N Nightster. This Custom / cruiser model is powered by a Air-cooled Evolution engine. Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters. V2, four-stroke engine with 1201.25 ccm (73.30 cubic inches) of actual displacement before 9.7:1 compression. Fueling is metered via Injection. Electronic Sequential Port Fuel Injection (ESPFI) allowing this machine to produce its horsepower and 107.00 Nm (10.9 kgf-m or 78.9 ft.lbs) torque. According to our records engine heat of the Harley-Davidson XL 1200N Nightster is moderated by Air. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is and the rear is 100/90-19 . The entire package is supported by the frame, Mild steel, tubular frame; circular. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Dual-piston. front brakes and Single disc. Single-piston. rear brakes. The Harley-Davidson XL 1200N Nightster 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.