It appears you're interested in specifications for the Yamaha Roadliner Midnight. This Custom / cruiser model is powered by a V2, four-stroke engine with 1851.85 ccm (113.00 cubic inches) of actual displacement before 9.5:1 compression. Fueling is metered via Injection. Twin-Bore electronic fuel injection;throttle position sensor allowing this machine to produce its horsepower and torque. According to our records engine heat of the Yamaha Roadliner Midnight is moderated by Air. 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 130/70-18 and the rear is 190/60-17 . The entire package is supported by the frame, Aluminum monoshock. 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 Roadliner Midnight was launched in 2009, 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.