This TFC 63 mm big-bore and +3.0 mm stroker kit is listed for 150 cc GY6 QMI/QMJ A-case engines, with a stated finished displacement of 190 cc. The kit combines a cylinder and head, piston, A8 high-lift cam and stroker crankshaft; the product photos also show ring and gasket components.
This product is intended for off-road use only. This product is not intended for use on public roads or land.
Confirm the engine family, A-case configuration and cylinder stud spacing before ordering. This is a performance kit intended for off-road use only.
