It appears you're interested in specifications for the Yamaha Star Stryker Bullet Cowl. This Custom / cruiser model is powered by a V2, four-stroke engine with 1311.05 ccm (80.00 cubic inches) of actual displacement before 9.5:1 compression. Fueling is metered via Injection allowing this machine to produce its horsepower and torque. According to our records engine heat of the Yamaha Star Stryker Bullet Cowl is moderated by Liquid. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 120/70-21 and the rear is 210/40-18 . The entire package is supported by the frame, Steel double cradle. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc. Hydraulic. front brakes and Single disc. Hydraulic. rear brakes. The Yamaha Star Stryker Bullet Cowl was launched in 2015, 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.