It appears you're interested in specifications for the Harley-Davidson Speedway racer. This Cross / motocross model is powered by a Single cylinder, four-stroke engine with 500.00 ccm (30.51 cubic inches) of actual displacement before 16.5:1 compression. Fueling is metered via allowing this machine to produce its horsepower and torque. According to our records engine heat of the Harley-Davidson Speedway racer is moderated by . 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 front brakes and rear brakes. The Harley-Davidson Speedway racer was launched in 1934, 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.