Cometic HD 99-17 Big Bore Kit 3.875" Bore .030" HG

Cometic HD 99-17 Big Bore Top End Rebuild Kit

Unleash the full potential of your Harley-Davidson with the Cometic HD Big Bore Top End Rebuild Kit. Designed for models from 1999 to 2017 and featuring a 3.875" bore with a .030" head gasket, this kit is engineered to handle the increased demands of bigger displacement engines. Cometic Gasket is committed to delivering innovative, high-quality gaskets that maximize your engine's power and performance.

Features for Enhanced Performance:

• Optimized for Harley-Davidson models 1999-2017
• Accommodates a 3.875" big bore configuration
• Includes a precisely measured .030" head gasket
• Constructed with premium materials for exceptional sealing
• Built to withstand higher cylinder pressures and extreme temperatures

Proudly manufactured in the USA using American-sourced materials, Cometic gaskets ensure superior reliability and durability for your V-twin. This top-end rebuild kit provides the critical components needed for a perfect seal, ensuring your engine runs at its peak efficiency and power. Whether you're building a custom high-performance machine or performing a major overhaul, trust Cometic Gasket for your engine's critical sealing needs.

Invest in performance and longevity with a kit designed for power. Experience the difference that quality American-made components make for your ride.

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…and 19 additional fitments. Contact us to confirm yours.