Cometic C9897-060 V-Rod 4.250in Bore .060in MLS Head Gasket

The Cometic C9897-060 is a Multi-Layer Steel (MLS) cylinder head gasket designed for Harley-Davidson V-Rod engines bored out to 4.250 inches, with a compressed operating thickness of .060 inches. This gasket is engineered for performance builds requiring increased compression ratio management or deck surface correction, making it a go-to choice for serious V-Rod engine builders.

MLS Construction: The three-layer MLS design features a center shim layer of uncoated stainless steel — which can be varied to achieve different overall thickness requirements — flanked by two embossed outer layers coated on both sides with Viton rubber. This construction handles the demands of extreme sealing environments, high cylinder pressures, varied load conditions, and a wide range of surface finishes.

Key Features:

• Bore Size: 4.250 inches
• Compressed Thickness: .060 inches
• Construction: Multi-Layer Steel (MLS)
• Outer Layer Coating: Viton rubber — fuel and heat resistant
• Center Layer: Uncoated stainless steel for strength and rebound
• No sealants required — installs dry
• Ideal for aluminum head-to-aluminum block and aluminum head-to-cast-iron block applications
• Resists creep, cracking, and brittleness under high-heat, high-pressure conditions
• Made in the USA with American-sourced materials

Cometic's MLS head gaskets are the industry standard for championship-winning builds across professional and amateur motorsports. The C9897-060 is sold individually and is the correct choice for overbored V-Rod applications requiring a thicker-than-stock head gasket for precise compression tuning.