Cometic Top End Gasket Kit with EST Technology

Cometic Top End Gasket Kits with EST (Extreme Sealing Technology) are engine gasket sets for rebuilding the top end of a powersports engine. They are also sold as EST top end gasket sets or top end rebuild kits. Each kit is built to restore a reliable seal in high-output engines.

Key Features:

• Embossed stainless steel construction: The head, base and rocker gaskets are embossed stainless steel covered with a proprietary rubber coating.
• Heat management: The head gasket material draws heat away from the combustion ring and spreads it evenly across the gasket surface. This helps prevent hot spots and gasket failure.
• Multi-layer steel (MLS) head gaskets: The layered design promotes even torque load across the sealing surface. This means less bore distortion and better piston ring seal.
• Complete top end sealing: The kits include the gaskets, seals and O-rings needed to rebuild the top end from the cylinder base upward. Exact contents vary by part number.
• Made in the USA: Cometic builds its gaskets with materials and processes meant to match the demands of modern engines.

These kits suit stock rebuilds and higher-output engines. They are designed to deliver the sealing performance and durability needed to meet or exceed OE specifications.