Valve train drive part for 125–150 cc 4-stroke scooters. It works together with the timing chain and keeps the camshaft and crankshaft running in sync. Country of origin: China.
If you hear a metallic knock or the chain rattling at idle, check this part and the chain tension: wear can cause the chain to jump. After replacing valve train drive parts, check the timing marks and the chain tension.
What to consider when choosing:
- engine type
- dimensions
- condition of the chain
