It appears you're interested in specifications for the Honda CB 650 SC Nighthawk. This Sport touring model is powered by a In-line four, four-stroke engine with 655.00 ccm (39.97 cubic inches) of actual displacement before 9.5:1 compression. Fueling is metered via Carburettor. Four 32mm constant velocity allowing this machine to produce its 63.00 HP (46.0 kW) horsepower and torque. According to our records engine heat of the Honda CB 650 SC Nighthawk is moderated by Air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Shaft drive (cardan) 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 Double disc. daul disc twin piston calipers front brakes and Expanding brake (drum brake) rear brakes. The Honda CB 650 SC Nighthawk was launched in 1984, 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.