Universal scooter muffler/silencer for 50cc & GY6 125cc & 150cc scooters This style muffler is a typical OEM stock muffler on many Chinese made scooters and is suitable for almost all 4-stroke gas scootersDescription Universal scooter muffler/silencer for 50cc & GY6 125cc & 150cc scooters. This style muffler is a typical OEM stock muffler on many Chinese made scooters and is suitable for almost all 4-stroke gas scooters.Also known as a “4T” version scooter muffler exhaust system. WARNING California Residents: Proposition 65 Warning