It appears you're interested in specifications for the Harley-Davidson Model JDCA. This Sport model is powered by a V4, four-stroke engine with 1208.00 ccm (73.71 cubic inches) of actual displacement before compression. Fueling is metered via Carburettor allowing this machine to produce its 12.00 HP (8.8 kW) horsepower and torque. According to our records engine heat of the Harley-Davidson Model JDCA is moderated by . You'll need to get familiar with the 3-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 28-Mar and the rear is 28-Mar. 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 Model JDCA was launched in 1924, 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.