It appears you're interested in specifications for the Harley-Davidson Street Bob Dark Custom. This Custom / cruiser model is powered by a Air-cooled, Twin Cam 103B V2, four-stroke engine with 1689.61 ccm (103.10 cubic inches) of actual displacement before 9.6:1 compression. Fueling is metered via Injection. ESPFI allowing this machine to produce its horsepower and 124.75 Nm (12.7 kgf-m or 92.0 ft.lbs) torque. According to our records engine heat of the Harley-Davidson Street Bob Dark Custom is moderated by Air. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Belt maintainence. Our best information shows that the front tire size is 100/90-19 and the rear is 160/70-17 . 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. 4-piston fixed front brakes and Single disc. 2-piston torque-free floating rear brakes. The Harley-Davidson Street Bob Dark Custom was launched in 2014, 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.