Cylinders/Gaskets GY6 50 139QMB (4)

High performance cam for 139QMB engine. Use this camshaft when upgrading the cylinder and head to get the most performance from your new 72 or 82cc kit. 25.8mm intake lobe...

88cc cylinder for you, although this is not a bolt-on item for most QMB 139 bikes. Most of the time, engine cases need to be cut. Order part number 1400-1001,...

NCY 88cc Aluminum Performance Cylinder Head. High quality alloy cylinder head designed to work seamlessly with the 1100-1237 88cc cylinder kit. Give your QMB139 the power to get some respect....

The NCY 88cc Cylinder Gasket Set for GY6 50cc Engine includes the necessary gaskets for installing or overhauling an NCY 88cc Big Bore cylinder. Designed to manufacturer specifications, these gaskets...