cylinder kit 72cc -101 OCTANE- for GY6, Kymco 4-stroke, 139QMB/QMA

High-torque 72cc sport cylinder kit for 50cc GY6 and Kymco 4-stroke engines. Absolute price hammer.

This cylinder kit is not designed for high engine speeds, its strengths lie in the lower speed range. Already shortly above the idle speed follows a constant and very good acceleration without loading the engine with unnecessarily high engine speeds.

The kit is supplied complete including all parts and gaskets. The original cylinder head is still used.

The kit can be run with the original carburetor, but we recommend the adjustment of the main jet.

The bore is 47mm which corresponds to an exact displacement of 72cc. Often these 47mm kits are also called or sold as 80cc cylinders because in Asia scooters with 47mm cylinders were also sold as 80cc scooters. From the engine development, 47mm cylinder is actually the original cylinder for QMB/QMA engines. In order to offer vehicles suitable for the driving license regulations in Europe, the scooters are equipped with 39mm cylinders by the manufacturers and thus have 49cc._{AI-translation}