It appears you're interested in specifications for the Tomos BT 50 S. This Sport model is powered by a Single cylinder, two-stroke engine with 50.00 ccm (3.05 cubic inches) of actual displacement before 11.0:1 compression. Fueling is metered via Carburettor allowing this machine to produce its 5.48 HP (4.0 kW) horsepower and torque. According to our records engine heat of the Tomos BT 50 S is moderated by Air. 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 and the rear is . 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 Expanding brake (drum brake) front brakes and rear brakes. The Tomos BT 50 S was launched in 1989, 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.