Milwaukee Twins Round Copper Exhaust Port Gaskets For Harley Shovelhead Milwaukee Twins Round Copper Exhaust Port Gaskets are designed to be a crushable gaskets to allow it to be a snug fit around the pipe before installation into the head. After pipes are torqued into position, the gaskets crush into a flat shape for a superior seal around the exhaust port surface. Features: Crushable to provide a tight fit Copper material is heat resistant Sold in pairs Replaces OEM 65834-68A