It appears you're interested in specifications for the Hyosung RT 125D. This Allround model is powered by a Single cylinder, four-stroke engine with 124.00 ccm (7.57 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. BDS26 allowing this machine to produce its 13.50 HP (9.9 kW) horsepower and torque. According to our records engine heat of the Hyosung RT 125D is moderated by Oil & 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 130/80-18 and the rear is 130/80-14 . 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 Hyosung RT 125D 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.