This 66/80cc Gasket #9 is compatible with the following engine kits.
1. 66/80cc Flying Horse Bullet Train Bicycle Engine Kit
2. BBR Tuning 80/100cc 2-Stroke Motorized Bicycle 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
Perfect just wat i needed
one time use great but if your careful you can get a few seals out of it