It appears you're interested in specifications for the Jinlun JL 50QT-5 Commuter. This Scooter model is powered by a Single cylinder, four-stroke engine with 49.50 ccm (3.02 cubic inches) of actual displacement before 10.5:1 compression. Fueling is metered via Carburettor allowing this machine to produce its 3.08 HP (2.2 kW) horsepower and 3.00 Nm (0.3 kgf-m or 2.2 ft.lbs) torque. According to our records engine heat of the Jinlun JL 50QT-5 Commuter is moderated by Air. 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 10-Mar and the rear is 10-Mar. 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 Jinlun JL 50QT-5 Commuter 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.