It appears you're interested in specifications for the Hyosung GT650S. This Sport touring model is powered by a V2, four-stroke engine with 674.00 ccm (41.13 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. 2 x 39 mm allowing this machine to produce its 78.00 HP (56.9 kW) horsepower and torque. According to our records engine heat of the Hyosung GT650S is moderated by Oil & air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 120/60-17 and the rear is 160/60-17 . The entire package is supported by the frame, Dual Lateral Oval Bar. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc front brakes and Single disc rear brakes. The Hyosung GT650S was launched in 2008, 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.