Keep your engine running in sync with this Timing Chain for QMB139 49cc / 50cc GY6 4-Stroke Engines. This cam chain is responsible for precisely timing the rotation of the crankshaft and camshaft, ensuring optimal valve movement and combustion. Ideal for engine rebuilds, maintenance, or replacing a stretched chain, this part fits most Chinese scooters using the 139QMB engine platform.
- Replacement timing chain for QMB139 GY6 50cc 4-stroke engines Maintains accurate valve and ignition timing High-strength steel links for long-lasting durability OEM-style fitment for easy installation Ideal for top-end rebuilds or engine refreshes Specifications: Engine Type: QMB139 (GY6 49cc / 50cc 4-stroke) Chain Type: OHC cam timing chain Material: Hardened steel Condition: Brand New Fits: TaoTao, Jonway, Bintelli, Peace Sports, Wolf, and other Chinese 50cc scooters
