It appears you're interested in specifications for the Rieju Marathon 450 . This Enduro / offroad 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 Carburettor. Keihin FCR-MX39 allowing this machine to produce its horsepower and torque. According to our records engine heat of the Rieju Marathon 450 is moderated by Liquid. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 90/90-21 and the rear is 140/90-18 . The entire package is supported by the frame, Highly resistant semi double-cradle steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc front brakes and Single disc rear brakes. The Rieju Marathon 450 was launched in 2010, 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.