Heavy-duty, 1.89 Inconel exhaust valves provide added durability for marine applications. Hard anodized black to protect the aluminum in the harsh marine environment. Sold with valves only to allow for valve spring choices. Match with an Edelbrock Performer RPM manifold, Performer Series 750 cfm marine carb and Performer RPM cam for proven performance. Smaller-than-stock 11/32 valve stems promote excellent flow and lighter valve weight.

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