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.

More About CMI Big Tube Headers:

CMI Big Tube Header Systems give big block engines that have 540 or more cubic-inch displacements the ability to generate peak horsepower and torque during the whole operating range. CMI Big Tube Headers have helped power more National and World Champion boats than any of the other header manufacturers combined, proving they can withstand some of the toughest marine environments encounterable – offshore racing. CMI Big Tubes can be stepped in any custom configuration to comply with any engine builders’ needs.

The largest inside diameter options available on the marine header market are offered with CMI’s fully polished Big Tube systems, including 2 1/8”, 2 1/4”, and 2 3/8” inside diameters for all possible step combinations. All CMI Big Tube header systems come with stainless steel cooling fluid distribution tubes, header bolts, gaskets, and any cooling fittings that may be required for installation.

CMI also offers a large range of marine exhaust tailpipe options like CMI Sound Choice selectable silencing system to complete any header installation.

CMI Tailpipes sold separately.

 
 
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