It appears you're interested in specifications for the Yamaha XVS 650 DragStar. This Custom / cruiser model is powered by a V2, four-stroke engine with 649.00 ccm (39.60 cubic inches) of actual displacement before 9.0:1 compression. Fueling is metered via allowing this machine to produce its 39.42 HP (28.8 kW) horsepower and 50.90 Nm (5.2 kgf-m or 37.5 ft.lbs) torque. According to our records engine heat of the Yamaha XVS 650 DragStar is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 100/90-ZR19 and the rear is 170/80-ZR15 . 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 front brakes and Expanding brake (drum brake) rear brakes. The Yamaha XVS 650 DragStar was launched in 2004, 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.