Mercury – Flo-Torq SSR Propeller Hub Kit | Propulsion System | Soft Shift Rubber Design | 8M0150151

Overview

There’s a certain moment every boater knows — that quiet pause before you shift into gear. You listen, you feel, and you hope everything engages cleanly. With the Mercury Flo-Torq SSR Propeller Hub Kit 8M0150151, that moment becomes effortless. You’ll notice how the shift settles gently instead of jolting through the boat. It’s the kind of smoothness that makes long days on the water feel easier, and tight maneuvering around the docks a whole lot more relaxed. When your prop hub works this well, you’re reminded how much confidence comes from those small, steady details that Mercury always gets right.

Key Features

• Designed to reduce shift clunk, vibration, and harsh engagement
• Features a Soft Shift Rubber sleeve for quiet, cushioned shifting
• Protects the drivetrain against damage from minor impacts
• Includes thrust washer, drive sleeve, aft adapter, and prop nut
• Compatible with 1-inch prop shafts
• Upgraded design over Flo-Torq II and direct replacement for Flo-Torq III and IV

Engine & Boat Compatibility

• Fits Mercury and Mariner 40hp Command Thrust up to 225hp FourStroke outboards
• Works with engines using a 1-inch propeller shaft
• Ideal for fishing boats, center consoles, pontoons, bay boats, and multi-purpose family boats

Performance & Practical Benefits

The Flo-Torq SSR Hub Kit isn’t just another prop accessory — it changes how your boat behaves in the real world. Once installed, the first thing you’ll notice is how much tighter and more controlled your shifting feels. That loud “clunk” that sometimes kicks in when you drop into gear becomes a soft, muted nudge. It’s smoother backing away from a trailer, gentler easing into a slip, and far more pleasant when you’re making repeated short moves around structure.

On the water, the Soft Shift Rubber design helps cut the small vibrations that travel through the prop and into the hull. Everything feels calmer, steadier, more dialed in. And because the hub cushions unexpected impact energy, it acts like a safety buffer for your drivetrain—giving you peace of mind when the prop encounters debris or a shallow bump.

Installation is clean and straightforward, thanks to the precise geometry Mercury is known for. The fitment is exact, the hardware feels secure, and once torqued down, you know the prop is locked in and ready for serious run time. It’s a simple upgrade that delivers a very real improvement in comfort and protection.

Why Buy OEM

When it comes to hubs, tolerances matter. Mercury’s OEM engineering ensures every component fits the way the factory intended.

• Exact fit for dependable performance
• Longer-lasting materials designed for marine stress
• Superior shift quality compared to most aftermarket designs
• Protects your engine and propeller investment
• Designed to engage smoothly and quietly from day one

If you’re advising another boater, you’d tell them the truth — a hub isn’t where you take shortcuts. Mercury builds theirs to handle real-world conditions, not just perfect ones.

FAQ

Q1: Which engines does this hub kit fit?

It fits Mercury and Mariner 40hp Command Thrust to 225hp FourStroke engines with a 1-inch prop shaft.

Q2: What makes the Flo-Torq SSR different?

Its Soft Shift Rubber sleeve cushions shifting for quieter, smoother engagement than traditional hubs.

Q3: How do I confirm this is the right hub for my engine?

Match your engine horsepower, prop shaft size, and check your owner’s manual for recommended Flo-Torq compatibility.

Q4: Can this hub be used in both saltwater and freshwater?

Yes — the materials and design are built to withstand all typical marine environments.

Q5: Is installation simple?

Most boaters find it very straightforward. The kit includes the exact hardware needed for a proper, secure fit.