GY6 50 High Performance Cylinder Kits 139QMB

47mm 70cc, 50mm 50cc, 52mm 85cc

These are meant to sell along with a 50mm head. To be used with head and cam shaft for a personal designed Kit.

Single kits that match up with many heads and values from stock racing values to a big 52mm head match one of these up Kits up.

47mm Kits are sold by themselves all the time, so please remember adding a large cylinder kit with a stock head does not got far, simply the air is not moved. 50mm heads are all around but not 47mm heads. 47mm Heads have stock valves.

Piece your kit together right and don't leave out cam or head plus air and gas flow is most important. Adding small parts such as Idle jets , fuel line and air filters plus fuel valves make a big difference in a small build or large one.

Our cylinder kits listed here will deliver as NCY or Naraku