It appears you're interested in specifications for the Norton Commando 961 SS. This Naked bike model is powered by a Twin, four-stroke engine with 961.00 ccm (58.64 cubic inches) of actual displacement before 10.1:1 compression. Fueling is metered via Carburettor. Twin 39mm Keihin FCR allowing this machine to produce its 80.00 HP (58.4 kW) horsepower and 65.00 Nm (6.6 kgf-m or 47.9 ft.lbs) torque. According to our records engine heat of the Norton Commando 961 SS is moderated by Air. You'll need to get familiar with the 5-speed transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 120/70-X17 and the rear is 180/55-X17 . The entire package is supported by the frame, 4130 chromoly steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Single disc rear brakes. The Norton Commando 961 SS was launched in 2008, 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.