High Performance Custom Marine Inc CMI Headers & Tailpipes:

West Coast Offshore carries all the CMI Headers & Tailpipe Systems including CMI Big Tube Headers, CMI Big Elbow Top Race Headers, CMI Sport Tube Headers, CMI 496 Sport Tube Performance Headers, CMI Elbow Top (E-Top) Headers, CMI 496 Elbow Top (E-Top) Headers, CMI 520 Headers, CMI Gen-X Headers, CMI Evo-X Headers, and CMI Small Block Headers.

More About CMI Headers & Tailpipes:

All Custom Marine Inc (CMI) Headers are built according to strict standards that have elevated them as the top choice for performance boaters and offshore racers that demand on-the-water performance.

CMI headers begin their life being manufactured with state-of-the-art materials such as 316L and 317L stainless steel, which offers superior durability and corrosion-resistance. A unique and patented process for bending the tubes assures uniform thickness throughout the walls and eliminates all rippling and crazing of the tubes during their production. Heat treating the complete manifold, following its assembly by semi-automated tungsten inert gas welding, greatly reduces internal stresses and imperfections that most commonly cause corrosion, fatigue, and premature failure during high performance applications.

CMI also manufactures custom tailpipes to complement its header systems, as well as exhaust accessories, and integral mufflers for almost any single, dual, triple or quad engine configuration – including but not limited to small block or big block applications, Chevrolet and Buick V-6s and Ford 460 and SVO's.

With Custom Marine Inc, high performance boaters receive a combination of reliability and performance unrivaled by any competitor’s products available on the market.

“It's all about Performance.” Custom Marine Inc.

Choose the Right CMI Headers for your needs:

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Displaying 1 - 13 of 13 results
496, 454, 502 E-Top/Uni-Top Style Headers - No Tailpipe Required

High Performance Custom Marine Inc CMI 496, 454, 502 E-Top/Uni-Top Style Headers:

West Coast Offshore carries all the CMI 496, 454, 502 E-Top/Uni-Top Style Headers.

CMI Sport Tube Headers

High Performance Custom Marine Inc CMI Sport Tube Marine Headers:

West Coast Offshore carries all the CMI Sport Tube Marine Headers including Big Block Chevrolet Straight-Back and Taller style headers, Big Block Chevrolet Down-Turned Bravo Drive style headers, Small Block Chevrolet headers, and Ford 460 Iron Head headers.

CMI Stainless Steel Small Block Headers

Performance Custom Marine Inc CMI Small Block Marine Headers:

West Coast Offshore carries all the CMI Small Block Marine Headers including 1 1/2" and 1 7/8" Spread Port and Siamese Port Chevrolet Small Block Headers.

Gen-X 525EFI, 600SCi & 700SCi Headers

High Performance Custom Marine Inc CMI Gen-X 525EFI, 600SCI & 700SCI Marine Headers:

West Coast Offshore carries all the CMI Gen-X Marine Headers including 525EFI replacement headers, 600SCI replacement headers & 700SCI replacement headers.

CMI Big Elbow Top Headers (Big E-Top)

High Performance Custom Marine Inc CMI Big Elbow Top Marine Headers:

West Coast Offshore carries all the CMI Big Elbow Top Marine Headers including Big Block Chevrolet Big Elbow Top Headers with 1 7/8" inside-diameter primary tubes, Big Block Chevrolet Big Tube Big Elbow Top Headers with 2 1/8" or 2 1/4" inside-diameter primary tubes, and Single or Double Stepped Big Tube Elbow Headers with 2 1/8" or 2 1/4" inside-diameter primary tubes.

CMI Big Tube Headers

High Performance Custom Marine Inc CMI Big Tube Marine Headers:

West Coast Offshore carries all the CMI Big Tube Marine Headers including Big Block 2 1/8" Big Tube Headers, Big Block 2 1/8" Low-Profile Big Tube Headers, Big Block Chevrolet 2 1/4" Big Tube Headers, Big Block Chevrolet 2 3/8" Big Tube Headers, 460 Ford 2 1/8" Big Tube Headers, 460 Ford 2 1/4" Big Tube Headers, 460 Ford 2 3/8" Big Tube Headers, and custom stepped Big Tube Headers.

CMI Elbow Top Headers

High Performance Custom Marine Inc CMI Elbow Top Marine Headers:

West Coast Offshore carries all the CMI Elbow Top Headers including Big Block Chevrolet Headers in Polished or Platinum finish and Small Block Ford and Chevrolet Headers in Polished finish.

CMI Fusion Headers

High Performance Custom Marine Inc CMI Fusion Elbow Top Marine Headers:

West Coast Offshore carries all the CMI Fusion Elbow Top Marine Headers including Big Block Chevrolet Headers in Polished or Platinum finish with polished Collector and Tailpipe, and Small Block Ford and Chevrolet Headers in Polished finish and polished Collector and Tailpipe.
LS Marine Engine Headers

High Performance Custom Marine Inc CMI Stainless Steel LS Marine Headers:

West Coast Offshore carries all the CMI Stainless Steel Marine Headers including the LS Chevrolet Marine Headers. CMI Stainless Steel Marine Headers for the LS Chevy marine engine are of the highest quality and are definitley the right choice for your high performance LS Chev marine engine.

CMI Stainless Steel Tailpipes

High Performance Custom Marine Inc CMI Stainless Steel Marine Tailpipes:

West Coast Offshore carries all the CMI Stainless Steel Marine Tailpipes including CMI Sport Tube Header style Tailpipes, CMI E-Top Header style Tailpipes, CMI "S" style Tailpipes, and other Custom or Bravo style Tailpipes.

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