It appears you're interested in specifications for the Derbi Mulhacen 659. This Sport model is powered by a Single cylinder, four-stroke engine with 659.00 ccm (40.21 cubic inches) of actual displacement before 10.0:1 compression. Fueling is metered via Injection allowing this machine to produce its 48.60 HP (35.5 kW) horsepower and torque. According to our records engine heat of the Derbi Mulhacen 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 120/80-18 and the rear is 150/70-18 . The entire package is supported by the frame, Single steel beam 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. Ventilated front brakes and Single disc. Ventilated rear brakes. The Derbi Mulhacen 659 was launched in 2007, 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.