It appears you're interested in specifications for the KTM 450 XC. This ATV model is powered by a OHC with roller rocker lever Single cylinder, four-stroke engine with 447.92 ccm (27.33 cubic inches) of actual displacement before 11.0:1 compression. Fueling is metered via Carburettor. Keihin MX FCR 39 allowing this machine to produce its horsepower and torque. According to our records engine heat of the KTM 450 XC is moderated by Liquid. 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 21/7-10 and the rear is 20/11-9 . The entire package is supported by the frame, Chromoly (25 CrMo4). Subframe: Aluminum.. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Floating Wave discs, 4-piston fixed caliper front brakes and Single disc. Single piston floating caliper rear brakes. The KTM 450 XC was launched in 2012, 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.