It appears you're interested in specifications for the Yamaha Night Max. This Scooter model is powered by a Twin, four-stroke engine with 499.00 ccm (30.45 cubic inches) of actual displacement before 11.0:1 compression. Fueling is metered via Injection. Electronic Fuel Injection allowing this machine to produce its 42.91 HP (31.3 kW) horsepower and 45.00 Nm (4.6 kgf-m or 33.2 ft.lbs) torque. According to our records engine heat of the Yamaha Night Max is moderated by Liquid. You'll need to get familiar with the transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 120/70-M14 and the rear is 160/60-M15 . The entire package is supported by the frame, Diamond shaped. 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 Night Max 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.