About Custom Marine

With CMI®️, boaters get a combination of performance and reliability, unparalleled by any competitive products on the market.

Starting in 1984, Custom Marine Inc. quickly caught the attention of the offshore-racing community by producing custom designed headers and tailpipes that offered superior performance and quality to meet their high-performance needs.

Expanding on our header production, CMI® became the go-to partner for products other than high performance exhaust. Soon, our Made in the USA Custom Marine product boxes weren’t just at performance marine OEMS, but they had found their way into tow boat and military boat manufacturers as well. CMI® is now the leading choice in wake enhancement, surf exhaust and military hardware.

Over the years, CMI® has expanded tremendously – in size and scope, but also in sheer research and development creativity. From tube bending, end forming and metal polishing to sensors and wire harnesses, Custom Marine houses one of the most complete and technologically advanced facilities in the world. With top marine engineers and the best stainless steel craftsmen and artisans in the United States working together under one 98,000 square-foot roof, Custom Marine has emerged as the industry’s unquestioned innovation leader.


Tube-Pipe Bending

CNC Tube/Pipe Bending & Fabrication

Laser Cutting

Laser Cutting & Water Jet

Tube End Forming

Tube End Forming



Robotic Welding

Robotic & Manual Welding

Metal Finishing

Metal Finishing and Polishing

Press Break

Press Brake

Frequently Used Materials

Custom Marine works with a wide variety of metals and other materials on a daily basis. Here are some of the most frequent materials used. Contact us today, and let’s get started on your project.

  • Stainless Steel
  • Inconel
  • Titanium
  • Duplex
  • Brass Copper
  • Aluminum
  • PCMW

Markets Served


Tow boats


Performance boats



Speedboat fun on Lake Michigan

Pleasure boats

A modern fireboat moving at speed.

Work boats

Thank You

Thank you to our friends and partner OEMs for providing high quality images and video footage of their products, for use on the new Custom Marine website. We appreciate the support and look forward to a continued successful future working together.

For Investors & Corporate Information