Cometic top‑end rebuild kit for 1984–1991 Harley‑Davidson with a 2 13/16‑inch big bore, including a .030‑inch head gasket. The kit is designed to maintain reliable head sealing while distributing clamp loads evenly to reduce bore distortion. Cometic's gaskets have been tested on the street and track and are engineered to perform without additional sealant or re‑torque.
Cometic 84-91 2 13/16 Big Bore Top End Rebuild Kit w/ .030 Head Gasket