It appears you're interested in specifications for the Yamaha Royal Star Venture S. This Custom / cruiser model is powered by a V4, four-stroke engine with 1294.66 ccm (79.00 cubic inches) of actual displacement before 10.0:1 compression. Fueling is metered via Carburettor. (4) 32mm Mikuni CV allowing this machine to produce its horsepower and torque. According to our records engine heat of the Yamaha Royal Star Venture S is moderated by Liquid. 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 150/80-16 and the rear is 150/90-15 . 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 Double disc front brakes and Single disc rear brakes. The Yamaha Royal Star Venture S was launched in 2010, 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.