Comp Series
Revolution 4®

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 

• Mercury Verado Six Cylinder 300 hp and 350 hp
• Mercury Racing Verado 400R 
• Mercury OptiMax Pro XS 225 hp and 250 hp

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.

Enhanced Performance Vent System (PVS®) enables boaters to optimize forward and reverse thrust for greater control with Joystick Piloting for Outboards (JPO).

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. It’s technology that you can only get from Mercury.

A proprietary blend of 15-5 stainless steel perfectly balances strength and corrosion resistance in both freshwater and saltwater applications. Developed specifically for Mercury propellers.

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 centralised at Mercury's propeller manufacturing facility in Fond du Lac, Wisconsin.

Mercury transforms aluminium 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.