Cometic Top End Gasket Kit for KTM 90 mm Engines (C3779-EST)

The Cometic C3779-EST Top End Gasket Kit includes the correct base gasket, head gasket, cylinder O-rings, and other top-end-specific O-rings and seals required for top-end removal and reinstallation. Designed for KTM 4-stroke applications, this kit provides the sealing components needed to support reliable engine service and consistent performance. The Cometic part number C3779-EST identifies the Extreme Sealing Technology configuration, engineered for high-output naturally aspirated and boosted engines.
The MLS head gasket uses a multi-layered steel construction with embossed outer layers and a Viton rubber coating. This design promotes an even torque load across the gasket sealing surface, helping reduce bore distortion and improve piston ring sealing for dependable power. The gasket material also helps draw heat away from the combustion ring and dissipate it evenly across the surface, minimizing hot spots and reducing the risk of gasket failure in high-cylinder-pressure applications.
The EST gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with Cometic’s proprietary rubber material. These components are engineered to meet the demands of modern high-horsepower 4-stroke engines while supporting accurate fitment and dependable sealing during top-end assembly. Made in the USA, the Cometic C3779-EST kit is a practical choice for KTM engine rebuilds, maintenance, and performance-oriented service work.

Features:

• Complete top-end gasket kit with base gasket, head gasket, cylinder O-rings, and additional top-end seals

• MLS head gasket construction promotes even torque distribution and helps reduce bore distortion

• Viton-coated, multi-layered steel head gasket supports reliable sealing in high-cylinder-pressure engines

• EST design includes embossed stainless steel head, base, and rocker gaskets with proprietary rubber coating

• Heat-dissipating gasket material helps reduce hot spots and the potential for gasket failure

• Designed for KTM 4-stroke engines with a 90 mm application

• Made in the USA

Ships from Parts Unlimited.