It appears you're interested in specifications for the Beta RR 400. This Enduro / offroad model is powered by a Single cylinder, four-stroke engine with 398.00 ccm (24.29 cubic inches) of actual displacement before 11.0:1 compression. Fueling is metered via Carburettor. Keihin FCR-MX 39 allowing this machine to produce its horsepower and torque. According to our records engine heat of the Beta RR 400 is moderated by Liquid. 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 90/90-21 and the rear is 140/80-18 . The entire package is supported by the frame, Molybdenum steel with double cradle. 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 RR 400 was launched in 2006, 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.