Cometic, EST top end gasket kit. Evo B.T. - 84-91 Evo Big Twin (NU) 941779 dus op oa Harley Davidson

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Note: Length is measured around the radius

Past op: 96-13 FLHT

Only difference between the 'A' & 'B' gaskets is the outside perimeter

25" bolt circle

Cometic, EST top end gasket kit. Evo B.T. - 84-91 Evo Big Twin (NU) 941779 dus op oa Harley DavidsonWith 3. 5" bore MLS (Multi Layer Steel) . 030" 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.