GY6 50 High Performance Cylinder Kits 139QMB
47mm 70cc, 50mm 50cc, 52mm 85cc
These are meant to sell along with a 50mm/52mm head. To be used with head and cam shaft for a personal designed Kit.
Great replacement if your upgrade failed and do not head or cam.
Single kits that match up with many heads and values from stock racing values to a big 52mm head match one of these up.
47mm Kits are sold by themselves all the time, so please remember adding a large cylinder kit with a stock head does not go far, simply the air is not moved. 50mm head can be used with these cylinder kits and have larger valves. A 47mm head does NOT have larger valves but does have the bore to accept the piston.
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 SUP Parts.
48 Lower States Only