It appears you're interested in specifications for the Hyosung GT 250 EFI. This Sport model is powered by a V2, four-stroke engine with 249.00 ccm (15.19 cubic inches) of actual displacement before 9.6:1 compression. Fueling is metered via Injection. EFI allowing this machine to produce its 28.50 HP (20.8 kW) horsepower and torque. According to our records engine heat of the Hyosung GT 250 EFI is moderated by 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 110/70-17 and the rear is 150/70-17 . The entire package is supported by the frame, Perimeter Double Cradle. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc. 2-piston clipers front brakes and Single disc rear brakes. The Hyosung GT 250 EFI 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.