It appears you're interested in specifications for the Lifan Metro 50. This Scooter model is powered by a Single cylinder, four-stroke engine with 50.00 ccm (3.05 cubic inches) of actual displacement before 10.5:1 compression. Fueling is metered via Injection allowing this machine to produce its 2.95 HP (2.2 kW) horsepower and 2.60 Nm (0.3 kgf-m or 1.9 ft.lbs) torque. According to our records engine heat of the Lifan Metro 50 is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive 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 front brakes and Expanding brake (drum brake) rear brakes. The Lifan Metro 50 was launched in 2009, 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.