BBR Tuning Dragon Fire 66cc/80cc 2-Stroke Motorized Bicycle Engine Kit &ndash; Gas Bike Internal CDI Motor Engine Kit (Black) The Dragon Fire Bicycle Engine Kit offers an integrated CDI inside of the engine kit, giving you safer and more consistent spark than ever before. As with all Flying Horse engines, the Dragon Fire features the latest upgrades, including Japanese crank bearings and clutch components. Made for experienced riders and builders, our Flying Horse 66cc engine kit is ready soar- are you? Power: 5-6 HP (horse power) stock -Top Speed: 25-35 MPH (miles per hour) stock - Fuel Economy: 100-150 miles per gallon Fits Most 26" Wheeled Bikes (Mountain, Cruiser, Chopper, Road) with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around 1"). Installation is a breeze! All you need are some basic hardware skills, tools, and around 2-3 hours for installation and fine tuning adjustments (Note: Seller is not responsible for misuse or this kit or any warranty after installation). This product is NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.