It appears you're interested in specifications for the Derbi Mulhacén 659. This Naked bike model is powered by a Single cylinder, four-stroke engine with 659.70 ccm (40.25 cubic inches) of actual displacement before 10.0:1 compression. Fueling is metered via Injection. Nippondenso electronic injection with second air system,44mm throttle valve. allowing this machine to produce its horsepower and torque. According to our records engine heat of the Derbi Mulhacén 659 is moderated by Liquid. You'll need to get familiar with the 5-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 110/80-18 and the rear is 150/70-18 . The entire package is supported by the frame, Tubular 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 Single disc front brakes and Single disc rear brakes. The Derbi Mulhacén 659 was launched in 2008, 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.