Description
A quality top end gasket set is non-negotiable for engines pushing high horsepower and cylinder pressure—factory gaskets simply aren’t engineered to handle sustained boost or naturally aspirated outputs. The COMETIC C3550-EST uses multi-layered steel construction with Viton rubber coating and Extreme Sealing Technology (EST) to maintain consistent clamping load, eliminate hot spots, and prevent catastrophic gasket failure. If you’re rebuilding a high-output 4-stroke or want reliable sealing on your next top end R&R, this is the kit designed for the job.
- MLS head gasket design
- Embossed stainless steel construction
- Viton rubber coating
- Multi-layered steel layers
- Extreme Sealing Technology (EST)
- Yamaha C3550-EST fitment
- Includes base, head gaskets
- Includes cylinder O-rings
- Includes rocker gaskets
- Heat dissipation optimized
- Naturally aspirated compatible
- Forced induction compatible
- Made in U.S.A.
- Bolt-on installation









