It appears you're interested in specifications for the Piaggio X8 400. This Scooter model is powered by a Single cylinder, four-stroke engine with 399.00 ccm (24.35 cubic inches) of actual displacement before compression. Fueling is metered via Injection allowing this machine to produce its horsepower and 37.60 Nm (3.8 kgf-m or 27.7 ft.lbs) torque. According to our records engine heat of the Piaggio X8 400 is moderated by Liquid. You'll need to get familiar with the Automatic transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 120/70-14 and the rear is 130/70-12 . 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 Piaggio X8 400 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.