The item "Rear sprocket Delta, Alpha 420" is a drive sprocket for Alpha and Delta mopeds. The sprocket transmits rotation to or from the chain. The numbers in the name indicate the chain pitch and the number of teeth.
Replacement is needed if the teeth are worn ("hooked"), the chain is stretched, or there is runout. Replace the sprocket together with the chain. Manufacturer: TMMP. Available versions on the product page:
- 420-41 (item no. 0047)
- 420-40 (item no. 0048)
