It appears you're interested in specifications for the Yamaha V Star Custom. This Custom / cruiser model is powered by a V2, four-stroke engine with 655.52 ccm (40.00 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. (2) 28mm Mikuni downdraft-type allowing this machine to produce its horsepower and torque. According to our records engine heat of the Yamaha V Star Custom is moderated by Air. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is 100/90-19 and the rear is 170/80-15 . 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 Single disc front brakes and Expanding brake (drum brake) rear brakes. The Yamaha V Star Custom was launched in 2007, 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.