Flying Horse 2-Stroke/4-Stroke Motorized Bicycle Engine 415 Heavy Duty Chain &ndash; Gas Bike Chain Replacement The 415 Heavy Duty Bicycle Engine Chain will replace the drive chain for your motorized bicycle This chain is best used for motorized bikes manufactured after 2008, including Flying Horse, Mega Motors, Grubee, RAW, Power King, and Stinger Motors Note: As this is a heavy duty chain, modification to the drive sprocket of the engine kit may be required for proper installation