What engines are Mercury Black Max propellers designed for?

Black Max aluminum propellers fit most Mercury/Mariner outboards from 2.5 HP up to 250 HP and MerCruiser Alpha/Bravo One sterndrives (with appropriate Flo-Torq hub kits). Always verify gearcase size and WOT RPM range.

How do I choose the right Black Max pitch?

Match pitch to your engine’s recommended WOT RPM range and boat load. If your current prop over-revs, increase pitch; if it under-revs, decrease pitch. Use our size chart on this page as a starting point and water-test to confirm.

Do I need a Flo-Torq hub kit for a Black Max propeller?

Most models use Mercury’s modular Flo-Torq system. Some props include the hub; others require a separate kit. Check your engine/gearcase and part number to choose the correct hub hardware.

Are Black Max propellers good for everyday use?

Yes. Black Max props are durable Mercalloy aluminum with a value-first design—ideal for general-purpose boating on boats typically under 50 mph.

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Pontoon Trailers

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Upgrade your boating experience with a high-quality pontoon trailer from St. Croix Dock! We offer EZ Loader, Trophy, and Mid America trailers—trusted brands known for durability, smooth towing, and secure transport. Whether you're hauling your pontoon across town or storing it for the season, our trailers provide the perfect fit for easy loading and unloading. Find the right trailer for your boat and hit the water with confidence! 🚤💨

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