Cometic C9894-023 HD Twin Cam Bore MLS Head Gasket - 100mm 023 Pair

The Cometic C9894-023 is a high-performance Multi-Layer Steel (MLS) head gasket set designed for Harley-Davidson Twin Cam engines with 100mm cylinder bores. This pair of head gaskets features a compressed thickness of .023 inches (0.58mm), making them ideal for custom engine builds and compression ratio adjustments.

Key Features:

• Multi-Layer Steel construction for superior sealing and durability
• 100mm bore diameter fits big bore Twin Cam applications
• .023" compressed thickness allows for precise compression tuning
• Sold as a pair (includes gaskets for both cylinders)
• Engineered to withstand high cylinder pressures and temperatures
• Coated with a proprietary sealant for enhanced sealing performance

Cometic MLS head gaskets are constructed from multiple layers of stainless steel, which provide excellent conformability to sealing surfaces while maintaining strength under extreme conditions. The embossed design ensures even pressure distribution around combustion chambers, coolant passages, and oil return holes. These gaskets are an excellent choice for performance street bikes, racing applications, and custom engine builds requiring specific compression ratios.