S&S Cycle 900-0609 Layered Steel Head Gasket for Harley Twin Cooled 4-1/8" Bore .030" Thick 2-Pack

The S&S Cycle 900-0609 layered steel head gasket is specifically engineered for Harley-Davidson big twin engines equipped with Twin Cooled cylinder heads. This precision gasket set is designed for 4-1/8" bore applications and features a .030" thickness profile, making it the required gasket when upgrading to S&S 117" big bore kits with Twin Cooled heads.

Key Features:

• Layered steel construction for superior sealing and durability
• 4-1/8" bore diameter designed for big bore applications
• .030" thickness provides proper compression and sealing
• Stock bolt pattern for direct fit installation
• Specifically designed for Twin Cooled cylinder head applications
• Includes 2 gaskets per package (one for each cylinder)

This gasket is essential for 1999 and newer Harley-Davidson big twin engines when using Twin Cooled heads, particularly when installing S&S performance big bore cylinder kits. The multi-layer steel (MLS) design provides reliable sealing under high compression and temperature conditions, making it ideal for both stock and performance engine builds. The stock bolt pattern ensures compatibility with factory and aftermarket cylinder heads without requiring modifications.