It appears you're interested in specifications for the GAS GAS SM450 FSR. This Super motard model is powered by a Single cylinder, four-stroke engine with 449.00 ccm (27.40 cubic inches) of actual displacement before compression. Fueling is metered via Injection. Magneti Marelli allowing this machine to produce its horsepower and torque. According to our records engine heat of the GAS GAS SM450 FSR is moderated by Liquid. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 120/80-17 and the rear is 140/80-17 . The entire package is supported by the frame, Deltabox, cromoly. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Nissin front brakes and Single disc. Nissin rear brakes. The GAS GAS SM450 FSR was launched in 2007, 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.