Here are some high quality cylinder gasket sets for 50cc, 125cc, and 150cc GY6 engines from NCY NCY is well known in the competitive riding market as the brand to use when modifying your scooterDescription Here are some high quality cylinder gasket sets for 50cc, 125cc, and 150cc GY6 engines from NCY. NCY is well known in the competitive riding market as the brand to use when modifying your scooter. These are available in three sizes.Let Monster Scooter Parts be your source for NCY scooter parts and accessories.