It appears you're interested in specifications for the BMW G650X Challenge. This Enduro / offroad model is powered by a Single cylinder, four-stroke engine with 652.00 ccm (39.79 cubic inches) of actual displacement before compression. Fueling is metered via Injection. Electronic fuel injection  allowing this machine to produce its 53.00 HP (38.7 kW) horsepower and 60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) torque. According to our records engine heat of the BMW G650X Challenge 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-S21 and the rear is 140/80-S18 . 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 Single disc rear brakes. The BMW G650X Challenge was launched in 2007, 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.