It appears you're interested in specifications for the Harley-Davidson Roadster. This Naked bike model is powered by a Evolution® engine V2, four-stroke engine with 1202.0 ccm (73.35 cubic inches) of actual displacement before 10.0:1 compression. Fueling is metered via Injection. Electronic Sequential Port Fuel Injection allowing this machine to produce its 67.0 HP (48.9 kW) @ 6000 RPM horsepower and 103.1 Nm (10.5 kgf-m or 76.0 ft.lbs) @ 3750 RPM torque. According to our records engine heat of the Harley-Davidson Roadster is moderated by Air. 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 120/70-R19 and the rear is 150/70-R18 . 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. Dual-piston. Optional ABS. front brakes and Single disc. Dual-piston. Optional ABS. rear brakes. The Harley-Davidson Roadster was launched in 2020, 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.