KennyOffShore

NEW! Small Block E-Top Headers
A direct replacement for highly restrictive cast iron exhaust manifolds.


• Performance gains in horsepower & torque
• Greater fuel efficiency
• Patented “Cool Collar” design provides a short hot section at the flange, which helps minimize the possibility of water ingestion in to the engine
• Lighter weight 316L stainless steel
• Satin or polished finish

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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

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