Cylinder Kits
GY6 50cc 39mm Cylinder Kit for Chinese Scooters — 139QMB Fitment
GY6 50cc 39mm 缸体套件，适用于中国踏板车 — 139QMB 适配
✓ Market Verified: High-volume GY6 50cc category, consistent platform orders
Bore Size39mm
Compatible EngineGY6 50cc (139QMB)
Kit IncludesCylinder, piston, rings, pin, clips, gaskets
MOQ10 pcs
Racing-grade component — contact us for volume pricing, OEM quotation & MOQ details.
Performance Highlights
- 39mm bore for GY6 50cc (139QMB) engines
- Cylinder, piston, rings, pin and circlips
- Complete gasket set included
- Suitable for OEM replacement or standard rebuild
- Wide compatibility with Chinese 50cc scooters
- MOQ from 10 pcs
39mm cylinder kit for GY6 50cc scooter engines. Fits 139QMB platform. Includes cylinder, piston, rings, pin, clips and gasket set. OEM replacement and rebuild use.
| Bore Size | 39mm |
| Compatible Engine | GY6 50cc (139QMB) |
| Kit Includes | Cylinder, piston, rings, pin, clips, gaskets |
| MOQ | 10 pcs |
| Lead Time | 10-15 days |
| OEM Available | Yes |
| Warranty | 6 Months |
Related Racing Parts
Cylinder Kits
GY6 150cc 57mm Big Bore Cylinder Kit for Chinese Scooter and ATV
57mm big bore cylinder kit for GY6 150cc scooter and ATV engines. Fits 152QMI, 157QMJ platforms. Includes cylinder, piston, rings and gaskets.
Cylinder Kits
Yamaha PW50 44mm Big Bore Cylinder Barrel and Piston Kit
44mm big bore cylinder barrel and piston kit for Yamaha PW50. Upgrades displacement for improved performance. Includes cylinder, piston, ring, pin and clips.
Cylinder Kits
Honda CRF50 XR50 50cc Cylinder Upgrade Kit — Piston Rings Gaskets
Cylinder kit for Honda CRF50 and XR50. Includes cylinder, piston, rings, wrist pin, clips and full gasket set. OEM-spec fitment for 50cc pit bike engines.