Cometic C9725-018 HD 4" Twin Cam Stainless Steel Head Gaskets .018" 2-Pack

The Cometic C9725-018 is a pair of heavy-duty Multi-Layer Steel (MLS) head gaskets engineered for Harley-Davidson Twin Cam engines with 4" (101.6mm) bore. These premium gaskets feature a compressed thickness of .018" (0.46mm) and utilize advanced stainless steel construction for superior sealing performance and durability.

Key Features:

• Multi-Layer Steel (MLS) construction with stainless steel outer layers for maximum durability
• 4.000" (101.6mm) bore diameter designed for Big Bore Twin Cam applications
• .018" compressed thickness for precise compression ratio control
• Viton rubber gasket material embossed into outer stainless steel layers
• Superior resistance to heat, pressure, and fluid migration
• Sold as a matched pair (2 gaskets) for complete top-end rebuild
• Made in USA with aerospace-grade materials and manufacturing processes

Cometic MLS head gaskets eliminate the need for sealants and provide exceptional reusability compared to traditional composite gaskets. The embossed Viton rubber coating ensures optimal sealing even on imperfect mating surfaces, while the stainless steel layers maintain structural integrity under extreme cylinder pressures and temperatures. These gaskets are ideal for high-performance street and racing applications where reliability is critical.