See more: Special & Big Bore Gaskets
Pair head and base gaskets for air cooled Twin Cam 110CI & 4" Big Bore
Jims head and base gasket sets contain two .040" thick head gaskets and two .020" thick real base gaskets, not O-rings as standard. Fit all 1999-2017 Twin Cam with Jims 4" Big Bore cylinders.