YD100 Bottom End Crank Assembly of Gas Bicycle Engine kit

YD100 Bottom End Crank Assembly with improved magneto  For YD100 engine kit only; cylinder body gasket and Bolts/Studs to fasten the cylinder are excluded; Replacment for YD100 kit; m8 studs for front and rear mount,wide front mount Crank installed well inside of bottom It is Complete bottom end crank assembly of YD100 kit, easy to install. Dose not compatible with 2 stroke kit 66cc/80cc • Please also keep in mind that the motor will use a mix of gasoline and 2-cycle oil. The oil is used as a lubricant. Without it, the performance and longevity of the motor will be reduced. Please refer to the manual for further information including gasoline/oil ratios.• If you have any questions,please contact us for technical solutions.Upon purchase buyer agrees to the terms and conditions as stated in this description and in documents enclosed in the package. Buyer rides at own risk and acknowledges the dangers of riding motorized bicycles.WARNINGS AND PRECAUTIONS:RIDING A MOTORIZED BICYCLE CAN BE