New GY6 Exhaust Gasket. Fits between the cylinder head and muffler flange. Used on almost EVERY Chinese 125cc/150cc GY6 engine. Will work in the following 150cc off-road go karts (buggies). Kinroad, Runmaster, Carter Talon, Twister Hammerhead, SUNL 150, Yerf-dog 3206, Tomberlin, Baja 150, Roketa, KPX, etc. Will work in just about EVERY Chinese scooter with 125cc/150cc engine, including Roketa, SUNL, Baron, Vento, Yamati, Strada, etc. And is an exact fit for almost every 150cc Chinese ATV that uses the GY6 engine. Outside diameter is 1-3/16" Inside diameter is 15/16" .....Shipping is $1 in the continental USA.