It appears you're interested in specifications for the GAS GAS EC 515 FSR. This Enduro / offroad model is powered by a Single cylinder, four-stroke engine with 515.00 ccm (31.43 cubic inches) of actual displacement before compression. Fueling is metered via Injection. Kokusan electronic fule injection (Battery less EFI) allowing this machine to produce its horsepower and torque. According to our records engine heat of the GAS GAS EC 515 FSR is moderated by Liquid. 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 90/90-21 and the rear is 140/80-18 . The entire package is supported by the frame, Deltabox build with Cromoly D tubes.. 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 Single disc rear brakes. The GAS GAS EC 515 FSR 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.