Cometic C9725-040 4" Bore Twin Cam Head Gasket .040" MLS 2-Pack

The Cometic C9725-040 is a premium Multi-Layer Steel (MLS) head gasket set designed for Harley-Davidson Twin Cam engines with 4-inch bore cylinders. This 2-pack includes both head gaskets needed for a complete top-end rebuild, featuring a .040-inch compressed thickness for precise deck height and compression ratio tuning.

Key Features:

• Multi-Layer Steel construction with stainless steel armor for superior sealing and durability
• 4.000-inch bore diameter engineered for big-bore Twin Cam applications
• .040-inch compressed gasket thickness allows for compression ratio adjustment
• Viton rubber gasket sealing beads provide exceptional oil and coolant sealing
• Embossed stainless steel layers distribute clamping load evenly across the sealing surface
• Resistant to extreme temperatures, corrosion, and combustion pressures
• Complete 2-pack set includes both cylinder head gaskets

Cometic MLS head gaskets are the preferred choice for high-performance and racing applications where reliability under extreme conditions is critical. The multi-layer design allows the gasket to conform to minor surface imperfections while maintaining a gas-tight seal, making it ideal for both stock and modified Twin Cam engines.