It appears you're interested in specifications for the Kawasaki KX 450 F Monster Energy. This Cross / motocross model is powered by a Single cylinder, four-stroke engine with 449.00 ccm (27.40 cubic inches) of actual displacement before 12.5:1 compression. Fueling is metered via Injection allowing this machine to produce its horsepower and torque. According to our records engine heat of the Kawasaki KX 450 F Monster Energy 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 90/80-21 and the rear is 120/80-19 . The entire package is supported by the frame, Steel, double-cradle with box-section single-tube backbone. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Two-piston calipers front brakes and Single disc rear brakes. The Kawasaki KX 450 F Monster Energy was launched in 2009, 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.