It appears you're interested in specifications for the Harley-Davidson SST 250. This Classic model is powered by a Single cylinder, two-stroke engine with 243.00 ccm (14.83 cubic inches) of actual displacement before 10.3:1 compression. Fueling is metered via allowing this machine to produce its 20.00 HP (14.6 kW) horsepower and torque. According to our records engine heat of the Harley-Davidson SST 250 is moderated by Air. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.25-19 and the rear is 4.00-18 . 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 rear brakes. The Harley-Davidson SST 250 was launched in 1977, 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.