It appears you're interested in specifications for the Kawasaki ER-6n. This Naked bike model is powered by a Twin, four-stroke engine with 649.00 ccm (39.60 cubic inches) of actual displacement before 11.3:1 compression. Fueling is metered via Injection allowing this machine to produce its horsepower and 65.76 Nm (6.7 kgf-m or 48.5 ft.lbs) torque. According to our records engine heat of the Kawasaki ER-6n is moderated by Liquid. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 120/70-17 and the rear is 160/60-17 . The entire package is supported by the frame, Semi-double cradle, high-tensile steel. We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Double disc front brakes and Single disc rear brakes. The Kawasaki ER-6n was launched in 2009, 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.