Compatible with BT4​​9QT 50cc 139QMB 139QMA Engine Crankshaft

Suitable for BT4​​9QT 50cc 139QMB 139QMA 16 teeth 4T engine This product is compatible with the following models:BT49QT-3 50cc 4-strokeBT49QT-6A1 50cc 4-strokeBT49QT-6A4 50cc 4-strokeBT49QT-6B1 50cc 4-strokeBT49QT-6B4 50cc 4-strokeBT49QT-9R1 50cc 4-strokeBT49QT-9R3 50cc 4-strokeBT49QT-9S1 50cc 4-strokeBT49QT-9S3 50cc 4-strokeBT49QT-12C1 50cc 4-strokeBT49QT-12G 50cc 4-strokeBT49QT-20A2 50cc 4-strokeBT49QT 7-4-strokeBT49QT 9-4-strokeBT49QT 12-4-tempBT49QT 21B2-4-strokeBT49QT 50cc AC 4-strokeBT49QY 2-4-strokeBT 50cc AC 4-strokeBT50QT 9-4-strokeBT50QT 11-4-strokeCa 50 4-strokeEa 50cc 4-stroke (BT49QT-9F1)E 50cc 4-stroke (BT49QT-9F3)F 50cc 4-stroke (BT49QT-2C)H 50cc 4-stroke (BT49QT-12D)R 50cc 4-stroke (BT49QT-12A1)R 50cc 4-stroke (BT49QT-11)R 50cc 4-stroke (BT50QT-11)R50cc 4-stroke (BT49QT-12E)S R 50cc 4-stroke (BT49QT-7)S 50 4-strokeT 50 4-stroke (BT49QT-12F)T 50cc 4-stroke (BT49QT-12P1)

• Compatibility: Designed for BT49QT, 50cc, 139QMB and 139QMA engines, it is compatible with a solid crankshaft to ensure a good match.
• Durability: Made of solid , it improves the wear resistance of the crankshaft and extends its service life.
• Performance: The optimized design effectively improves the engine's operating efficiency and ensures smooth .
• Convenience: The installation process is simple and quick, without the need for complex tools, saving time and effort.
• Applicability: It is widely compatible with a variety of small motorcycle models to meet the needs of different users.