Cometic Cometic, EST top end gasket kit. Evo B.T. 3-5/8″ big bore

Description

Cometic Cometic, EST top end gasket kit. Evo B.T. 3-5/8″ big bore

84-91 Evo Big Twin with 3-5/8″ big bore cylinders (NU)

With 3.625″ bore MLS (Multi-Layer-Steel) .040″ thick head gaskets. The SLS (Single-Layer-Steel) cylinder base gaskets and SLS rocker cover gaskets used in these sets are .020″ thick and have .001″ of high temperature viton rubber coating on both sides. Kit comes with all gaskets, seals and o-ring for a complete top end rebuild.