Complete Gasket Kit - PolarisGaskets and gasket sets used by professionals in high performance machines and as OE replacements worldwide. MLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore distortion and better piston ring seal for more power. 4 stroke head gaskets are made to perform on todays highest output 4 stroke naturally aspirated and boosted machines, utilizing a multi layered steel design with the outer layers being