This cylinder body mounts directly onto the crankcase of the Bullet Train 66/80cc electric start two-stroke motorized bicycle engine. This is a stock replacement and not compatible with any other engines other than the Bullet Train.

This 66/80cc Cylinder Body is designed for use with Electric Start 2-stroke bicycle engine kits, like the 66/80cc Flying Horse Bullet Train Bicycle Engine Kit

Note: This part is not compatible with standard 66/80cc 2-stroke engine kits, such as the Mega Motors engine, non-electric start Flying Horse engines, Grubee engines, RAW Motors engines, and Power King (PK80) engines