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Comp Series
Revolution 4®

High-powered Hard Worker

A strong companion for heavyweight engines.

  • Available pitches 15, 17, 19, 20, 21, 23, 25
  • Rotation LH, RH
  • Performance vent system (PVS) Yes
  • Boat types Aluminum, Bowrider, Fish-n-ski, Inshore Fishing, Multi-species, Offshore fishing, Pontoon, Ski, Sportboat / Performance Boat
  • Number of blades 4
  • Material Stainless Steel
  • Fits Alpha drive, Bravo One drives, Outboards 135hp and above
  • Recommended for Outboard-powered center console boats
Flo-Torq SSR HD

Flo-Torq SSR HD

Introducing the Flo-Torq Soft Shift Rubber (SSR) HD, the next generation of Mercury Propellers’ Flo-Torq Hub Systems. The Flo-Torq SSR HD is the quietest and smoothest shifting propeller hub system in the market for high horse-powered outboards. In fact, the Flo-Torq SSR HD delivers a 10-19% shift clunk improvement vs. other noise reduction rubber hub systems and a 25%+ improvement vs. solid hub designs.

The Quietest and Smoothest Hub System Ever Created

During shifting events such as when using JoyStick Piloting for Outboards and/or shifting into gear, the Flo-Torq SSR HD rotates both port and starboard - eliminating shift clunk and vibration for quiet and smooth shifting. Once under load, the hub will engage the propeller inner hub, resulting in a solid hub with the ability to transfer the power of 

Flo-Torq SSD HD can be used on all high-horsepower applications such as center console, bass, multispecies, bay/flats, deck, tritoon/pontoon, RIB, and sport boats. It can be used with Mercury propellers Bravo I, Enertia, Enertia ECO, Fury, Revolution 4, Mirage Plus, and Tempest Plus. 

Watch the overview video for more detailed information.

Producing world-class Mercury propellers is no simple task

Producing world-class Mercury propellers is no simple task

Producing a world-renowned Mercury Marine prop takes time and skill, not to mention advanced engineering and know-how. Three dozen Mercury employees create some of the best props in the world. Every operation - from inception to completion - is centralized at Mercury's propeller manufacturing facility in Fond du Lac, Wisconsin.
Flo-Torq® II: Hidden Protection

Flo-Torq® II: Hidden Protection

Mercury's Flo-Torq propeller hub might just be the most important part you never see. Not only does it flex during shift changes, reducing noise and vibration. If your prop hits an underwater object, it sacrifices itself to save your lower unit. Just pop in a new hub and you're back on the water, no service call needed. The Flo-Torq hub also makes Mercury propellers compatible with most engines on the market while also providing unmatched corrosion protection.

A Higher Grade of Performance

A Higher Grade of Performance

Mercury transforms aluminum and stainless steel into the highest-quality, best-performing, most-durable marine propellers in the world. Also the best-selling, no surprise. Our experience, expertise, and proprietary technologies – Flo Torq®, Mercalloy®, X7® alloy, and PVS® (Performance Vent System) – give you a true competitive advantage. For best overall boat performance, there's no substitute for a Mercury Propeller.

Stainless Steel 15-5: Incredible corrosion protection to complement your impossible performance.

Stainless Steel 15-5: Incredible corrosion protection to complement your impossible performance.

A proprietary blend of 15-5 stainless steel perfectly balances strength and corrosion resistance. Perfect protection for freshwater and saltwater applications alike. Developed specifically for Mercury props.
Fine tuned.

Fine tuned.

PVS® (Performance Vent System). A Mercury-exclusive innovation for custom tuning and venting your propeller to match your engine.

Just by varying the size of the exhaust hole and controlling your engine’s rpm, you can eliminate sluggish performance or compensate for changes in load in altitude. And it’s technology that you can only get with Mercury Propellers.


Buy the Books
Buy the Books

You can order all available Mercury literature online or through any authorized Mercury dealer. Please have your outboard or sterndrive serial number before placing the order.

  • Operation, Maintenance, and Warranty Manuals
  • Parts Manual
  • Service Manual

Purchase a Manual

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