Cometic MLX Head Gasket for 4.125" Big Bore Twin Cam

Enhance your engine's reliability and performance with the Cometic MLX Head Gasket, specifically engineered for 4.125" big bore Harley Twin Cam applications. This premium multi-layer-xtreme gasket provides superior sealing for high-performance setups, including those with turbos, nitrous, or increased compression.

Description

The Cometic MLX Head Gasket 4.125" is the ultimate choice for enthusiasts pushing the limits of their Harley Twin Cam engines. Crafted from premium, fuel-resistant materials, these gaskets are designed to withstand extreme conditions without creeping, cracking, or becoming brittle. The innovative 4.125" big bore design is particularly popular for performance-oriented Harleys, effectively building serious cylinder pressure and demanding the advanced sealing properties that only MLX head gaskets can provide. Each gasket features a unique center layer folded over itself, simulating an O-ringed head and delivering targeted torque load precisely at the combustion seal. This makes Cometic multi-layer-xtreme gaskets essential for all Twin Cam applications utilizing a turbo, high compression, nitrous, or any other power adder modifications. Proprietary high-temperature coatings, combined with strategic embossments, create a micro seal for fluids against both the head and block surfaces, ensuring leak-free operation. Designed for straightforward installation, these big bore head gaskets require no special machining, fitting just like a regular MLS head gasket. Proudly made in the USA, they offer unmatched quality and performance for your high-performance motorcycle gasket needs.

Features & Highlights

• Premium Fuel-Resistant Construction: Manufactured from advanced materials that resist creeping, cracking, and brittleness, ensuring long-term durability and reliability under extreme engine conditions.
• Optimized for 4.125" Big Bore: Specifically designed for popular 4.125" big bore Harley Twin Cam setups, providing enhanced sealing capabilities crucial for high cylinder pressure applications.
• Simulated O-Ring Design: Features an innovative folded center layer that mimics an O-ringed head, applying targeted torque load directly at the combustion seal for superior sealing integrity.
• Essential for Power Adders: A must-have for Twin Cam engines running turbos, high compression, nitrous, or any power adder modifications, guaranteeing robust sealing for increased output.
• Advanced Micro Seal Technology: Proprietary high-temperature coatings and embossments create a precise micro seal, effectively preventing fluid leaks between the head and block surfaces.
• Easy Installation: Engineered for hassle-free installation without requiring any special machining, fitting seamlessly like a standard MLS head gasket.
• Made in the USA: Proudly manufactured in the United States, ensuring top-tier quality, precision, and performance standards.

Technical Specifications

• Type: Cylinder Head Gasket
• Units: Sold as a Pair
• Material: MLX (Multi-Layer-Xtreme)
• Bore Size: 4.125"
• Thickness: 0.91mm (0.036")
• Product Name: Head Gasket
• Vendor Part Number: C10358-036