GASKET HEAD 4.125" .036" MLX TWIN CAM 99-17 PR

Made in the USA Sold in pairs for popular bores and thicknesses Require no special machining and are installed like a regular MLS head gasket Proprietary high-temperature coatings along with embossments provide a micro seal for fluids against the head and block surface MLX head gaskets are essential for all Twin Cam applications using a Turbo, high compression, nitrous or any power adder modifications Center layer is folded over on top of itself which simulates an O-ringed head and adds a targeted torque load right at the combustion seal where you need it 4.125" big bore is a popular big bore for performance-oriented Harleys, as it builds serious cylinder pressure and can use the extra sealing properties of the MLX head gaskets Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle