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The Cometic Super Sidewinder top‑end gasket kit with a .030 head gasket for S&S 4 1/8 in applications supplies matched gaskets for head and base service. Engineered to conform clamp load across the sealing area and reduce bore distortion, the kit is designed to work without sealants or repeated re‑torque where applicable. Cometic relies on dynamometer and road testing to confirm sealing reliability.
Cometic S&S 4 1/8in Super Sidewinder Top End Gasket Kit w/ .030 Head Gasket
