Restore reliable starting performance with this Primary Drive Gear for QMB139 49cc / 50cc GY6 4-Stroke Engines. Also known as the starter clutch gear or starter gear 1, this gear connects the starter motor to the crankshaft via the starter clutch, helping your scooter start smoothly and efficiently. Ideal for replacing a worn or damaged gear during starter system repairs, this part is built to OEM specifications for long-lasting durability.
- Primary drive gear for GY6 50cc QMB139 engines Transfers power from the starter motor to crankshaft via starter clutch Heat-treated steel construction for durability and smooth operation OEM-style fitment for easy replacement Perfect for electric start repairs or engine rebuilds Specifications: Engine Type: QMB139 (GY6 49cc / 50cc 4-stroke) Gear Type: Primary starter drive / starter clutch gear Material: Hardened steel Condition: Brand New
