It appears you're interested in specifications for the Derbi GP1 Racing 50. This Scooter model is powered by a Single cylinder, four-stroke engine with 49.00 ccm (2.99 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor. Delorto PHVA 14 allowing this machine to produce its horsepower and torque. According to our records engine heat of the Derbi GP1 Racing 50 is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive Shaft drive (cardan) maintainence. Our best information shows that the front tire size is and the rear is . 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 Single disc. Ventilated disk front brakes and Single disc. Ventilated disc rear brakes. The Derbi GP1 Racing 50 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.