It appears you're interested in specifications for the Jawa 640 Classic. This Naked bike model is powered by a Twin, two-stroke engine with 343.50 ccm (20.96 cubic inches) of actual displacement before compression. Fueling is metered via allowing this machine to produce its 24.00 HP (17.5 kW) horsepower and torque. According to our records engine heat of the Jawa 640 Classic is moderated by Air. You'll need to get familiar with the transmission and pay attention to final drive Chain 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 Expanding brake front brakes and Expanding brake rear brakes. The Jawa 640 Classic was launched in 2001, 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.