It appears you're interested in specifications for the UM MTX-450R. This ATV 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. Mikuni, 42 mm allowing this machine to produce its 51.00 HP (37.2 kW) horsepower and torque. According to our records engine heat of the UM MTX-450R 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 22/7-10 and the rear is 20/10-9 . The entire package is supported by the frame, Lightweight, high-tensile 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 UM MTX-450R 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.