It appears you're interested in specifications for the UM DSR 150. This Enduro / offroad model is powered by a Single cylinder, four-stroke engine with 149.50 ccm (9.12 cubic inches) of actual displacement before 9.2:1 compression. Fueling is metered via Carburettor allowing this machine to produce its horsepower and torque. According to our records engine heat of the UM DSR 150 is moderated by Air. 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 2.75-21 and the rear is 2.75-21 . The entire package is supported by the frame, . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Expanding brake (drum brake) rear brakes. The UM DSR 150 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.