It appears you're interested in specifications for the Big Dog Mastiff. This Custom / cruiser model is powered by a V2, four-stroke engine with 117.00 ccm (7.14 cubic inches) of actual displacement before 9.6:1 compression. Fueling is metered via Carburettor. Also availbale with electronic injection. allowing this machine to produce its horsepower and torque. According to our records engine heat of the Big Dog Mastiff is moderated by . 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 120/70-21 and the rear is 300/35-18 . 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 front brakes and Single disc. 4-piston rear brakes. The Big Dog Mastiff 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.