Piston Kit for Scooter Engine 50cc GY6 139QMB

This piston kit is suitable for scooters 50cc with a 4-stroke engine of type GY6 models 139QMA / 139QMB.

Included:
- 1 piston head,
- 1 wrist pin,
- rings kit

Dimensions:
- Piston Head external diameter (near the ring): 38.4mm,
- Piston Head external diameter (at the bottom): 39mm,
- Piston Head height: 31.6mm,
- Wrist Pin diameter: 13mm