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Spring Special from CMI: Save $500 off Gen-X Headers' MSRP!

Regular price: $4,995.00

Spring Special price: $4,495.00!

Now through Memorial Day!
Call 920-720-4225 to take advantage of this offer.

CMI Gen-X Headers

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

  • Welded on distribution tube
  • 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

For more information, call Custom Marine at 920-720-4225.


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1315 County Road G       Neenah, WI 54956       P: 920-720-4225       F: 920-722-4530

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Custom Marine
1315 County Road G
Neenah, WI 54956