It appears you're interested in specifications for the BMW R 850 C Classic. This Custom / cruiser model is powered by a Two cylinder boxer, four-stroke engine with 848.00 ccm (51.74 cubic inches) of actual displacement before compression. Fueling is metered via Injection allowing this machine to produce its 50.00 HP (36.5 kW) horsepower and 71.00 Nm (7.2 kgf-m or 52.4 ft.lbs) torque. According to our records engine heat of the BMW R 850 C Classic is moderated by Air. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 100/90-ZR18 and the rear is 170/80-ZR15 . 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 Dual disc front brakes and Single disc rear brakes. The BMW R 850 C Classic was launched in 2001, 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.