It appears you're interested in specifications for the Piaggio X9 Evolution 500. This Scooter model is powered by a Single cylinder, four-stroke engine with 460.00 ccm (28.07 cubic inches) of actual displacement before 10.5:1 compression. Fueling is metered via allowing this machine to produce its 39.00 HP (28.5 kW) horsepower and 43.00 Nm (4.4 kgf-m or 31.7 ft.lbs) torque. According to our records engine heat of the Piaggio X9 Evolution 500 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 150/70-14 . The entire package is supported by the frame, Double cradle, high strength steel tube. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc. Bremo front brakes and Single disc. Bremo rear brakes. The Piaggio X9 Evolution 500 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.