Compatible with 50cc GY6 139QMB engines
High performance part
For use with NCY 81cc cylinder kits
Great for custom projects
This is our high performance 50 mm cylinder head by NCY
The 50 mm cylinder head is for use with NCY 81cc cylinder kits, and is compatible with 50cc GY6 139QMB engines
30 Day Warranty Description

This is our high performance 50 mm cylinder head by NCY.
The 50 mm cylinder head is for use with NCY 81cc cylinder kits, and is compatible with 50cc GY6 139QMB engines.
Let Monster Scooter Parts be your source for NCY scooter parts and accessories.
1100-1239