Cometic C10123-030 Top End Gasket Kit for Harley-Davidson Dyna 3.937" Bore .030" Head Gasket

The Cometic C10123-030 is a complete top end gasket kit designed specifically for 2006 and newer Harley-Davidson Dyna models with big bore applications. This comprehensive kit features Cometic's EST (Extreme Sealing Technology) gaskets engineered for 3.937-inch bore configurations.

Key Features:

• Multi-Layer Steel (MLS) head gasket with .030-inch compressed thickness for precise compression ratio tuning
• Complete top end gasket set for big bore applications on Dyna models 2006-up
• 3.937-inch bore diameter compatibility for performance engine builds
• EST technology provides superior sealing under extreme heat and pressure conditions
• Includes all necessary gaskets for top end rebuild or performance upgrade
• Manufactured from premium materials for maximum durability and reliability

Cometic gaskets are the preferred choice for professional builders and performance enthusiasts. The MLS head gasket design features multiple layers of stainless steel with elastomeric coatings that adapt to minor surface imperfections while maintaining excellent torque retention. This kit is ideal for big bore conversions, performance rebuilds, or routine top end service on Dyna platform motorcycles.