Thunder Shark Pro Racing 66cc/80cc Bicycle Engine Kit - 5.0 HP

NOTE: Top end assembly required for this engine kit. How to Install The Top End of a 80cc 66cc 48cc 2-Stroke Bicycle Engine Kit   This kit is for the serious racer. With almost every upgrade from the cylinder up, it does require assembly. Convert your bicycle to a motorized bicycle by adding a 2 stroke engine kit to it. The kit fits best on bikes with 25 to 30mm diameter front down tube and 70 degree Vee type frame like a mountain bike but can be installed on larger diameter tube frames with modifications. “Looks Cool” on the older beach cruiser type coaster brake bikes. The motor bolts to the bicycle frame in the center of the frame (additional mounting options available). A second Heavy Duty chain is attached from the motor to the rear wheel via a second sprocket attached to the rear wheel. Starting: 2 stroke motor kits are started by “bump” starting them. While holding in the clutch, pedal the bike quickly. When you release the clutch after the bike gets to speed, it push starts