It appears you're interested in specifications for the Beta Evo 80 Junior. This Trial model is powered by a Single cylinder, two-stroke engine with 79.60 ccm (4.86 cubic inches) of actual displacement before 14.7:1 compression. Fueling is metered via Carburettor allowing this machine to produce its horsepower and torque. According to our records engine heat of the Beta Evo 80 Junior is moderated by . You'll need to get familiar with the 6-speed transmission and pay attention to final drive maintainence. Our best information shows that the front tire size is 2.50-19 and the rear is 3.50-17 . The entire package is supported by the frame, Steel. 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 Single disc rear brakes. The Beta Evo 80 Junior was launched in 2010, 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.