It appears you're interested in specifications for the Aprilia SR R 50. This Scooter model is powered by a Hi-Per 2 Pro engine Single cylinder, two-stroke engine with 49.0 ccm (2.99 cubic inches) of actual displacement before 12.1:1 compression. Fueling is metered via Carburettor allowing this machine to produce its horsepower and torque. According to our records engine heat of the Aprilia SR R 50 is moderated by Liquid. You'll need to get familiar with the Automatic transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 130/60-13 and the rear is 130/60-13 . The entire package is supported by the frame, Split single cradle frame in high tensile 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 Single disc. 2 opposing pistons front brakes and Single disc. 2 opposing pistons rear brakes. The Aprilia SR R 50 was launched in 2021, 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.