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CMI INDUSTRIAL

CMI Industrial is proud of its heritage as a designer and manufacturer of top-quality sound and noise attenuation systems that have set the benchmark for quality and innovation. CMI has enjoyed a decades-long leadership position by offering unparalleled products and services, and maintaining industry-leading customer satisfaction.

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CMI Gen-X® Headers

CMI Gen-X Headers

A direct factory replacement for Mercury HP525 EFI, HP600 SCi and HP700 SCi engines.

Works with existing tailpipes.


  • Downturn collector provides improved water fill.
  • More equalized primaries for greater performance in horsepower and torque.
  • Using the same high quality 316L stainless steel that is used in our race systems.
  • Patented “Cool Collar” design provides a short hot section at the flange, which helps minimize the possibility of water ingestion in to the engine.
  • Dual bolt pattern for both the Mercury platform and the standard GM pattern.