Sprocket 428-41 Delta, Alpha (Scorpion), super quality: a drive sprocket for Alpha mopeds. The sprocket transmits rotation to or from the chain. The numbers in the name indicate the chain pitch and the number of teeth.
Replace the part if the teeth are worn ("hooked"), the chain is stretched, or there is runout. Replace the sprocket together with the chain. Designation 428-41: chain pitch 428, 41 teeth. Install the part with clean mating surfaces and, where possible, with new gaskets and fasteners. If you are unsure about compatibility, call us and we will help you by model.
