See more: Special & Big Bore Gaskets
Head gaskets 3 5/8", Evolution Big Twin 1984 thru 1999 and Sportster models 1984 to present
Europe's leading gasket manufacturer Athena offers specific gaskets for specific needs. In addition to the complete gasket kits they offer Big Bore head and base gaskets for 3 5/8" bore cylinders. These gaskets are sold in sets of 2.