It appears you're interested in specifications for the Polini XP 4 Street 125. This Super motard model is powered by a Single cylinder, four-stroke engine with 120.70 ccm (7.37 cubic inches) of actual displacement before 9.5:1 compression. Fueling is metered via Carburettor. Mikuni 22 allowing this machine to produce its horsepower and torque. According to our records engine heat of the Polini XP 4 Street 125 is moderated by Air. You'll need to get familiar with the 4-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.50-10 and the rear is 3.50-10 . 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 front brakes and rear brakes. The Polini XP 4 Street 125 was launched in 2008, 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.