It appears you're interested in specifications for the ATK GT650R. This Sport model is powered by a 90° V-twin V2, four-stroke engine with 647.00 ccm (39.48 cubic inches) of actual displacement before 11.6:1 compression. Fueling is metered via Injection. EFI allowing this machine to produce its 79.00 HP (57.7 kW) horsepower and 66.88 Nm (6.8 kgf-m or 49.3 ft.lbs) torque. According to our records engine heat of the ATK GT650R 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 120/60-ZR16 and the rear is 160/60-ZR16 . 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 Double disc. Semi Floating discs, 4 pistons calipers front brakes and Single disc. 2 pistons caliper rear brakes. The ATK GT650R was launched in 2014, 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.