Mercury – Flo-Torq SSR Propeller Hub Kit | Soft-Shift Series | Rubber & Composite | 8M0150152

Overview

If you’ve spent enough time around docks or ramps, you know the unmistakable sound of a prop shifting into gear — that sharp clunk that makes everyone glance over. When you switch to the Flo-Torq SSR Propeller Hub Kit 8M0150152, that noise all but disappears. It’s the kind of upgrade you feel instantly, not because it’s flashy, but because it makes the whole boat settle into a smoother rhythm. Whether you’re easing away from the morning fog or lining up for an evening run back across the bay, you’ll appreciate how quiet and controlled everything feels with this hub in place. It’s small, but it changes the character of your engine in a way you’ll notice every single outing.

Key Features

• Soft-shift rubber hub system designed to reduce shifting noise and vibration
• Compatible with Mercury 40-115hp Command Thrust outboards and FourStroke models up to 225hp with 1-inch propeller shafts
• Upgraded design replaces older Flo-Torq III and IV kits and improves on Flo-Torq II
• Helps prevent drivetrain shock for added protection during prop impacts
• Includes thrust washer, SSR drive sleeve, drive sleeve adapter, tabbed lock washer, and locking prop nut
• Engineered for general-purpose and non-surface-piercing propeller applications

Engine & Boat Compatibility

• Mercury 40hp Command Thrust outboards
• Mercury 75–115hp Command Thrust outboards
• Mercury FourStroke outboards up to 225hp with 1-inch diameter propeller shafts
• Suitable for pontoons, center consoles, jon boats, ski boats, bay boats, and runabouts
• For high-performance or surface-piercing setups, Mercury recommends a different SSR series hub

Performance & Practical Benefits

The heart of this hub kit is that Soft-Shift rubber sleeve, and once you run with it, you’ll understand why it matters. Gear engagement becomes noticeably smoother — not just quieter, but gentler. That means less jarring through the boat, fewer surprises when loading or unloading passengers, and better longevity for internal drivetrain components. It’s one of those upgrades that makes the whole boat feel more dialed-in.

You’ll also notice how steady the prop feels at lower speeds. The reduced vibration helps the engine transfer power more cleanly, giving you a more predictable throttle response when maneuvering in tight spaces or guiding the boat around structure. Once you’re underway, the hub stays tight and balanced, delivering a refined feel without introducing slop or rattle.

Durability is another big part of the story. The Flo-Torq SSR is built to absorb minor impacts that could otherwise travel straight into the drivetrain. It offers a layer of protection that becomes priceless the moment you bump a sandbar or clip floating debris you never saw coming. For boaters who log real hours or run in unpredictable water, that kind of safeguard is worth its weight.

Why Buy OEM

• Designed specifically for Mercury propeller and prop-shaft geometry
• Proven reliability backed by decades of Mercury engineering
• More consistent quality and longer lifespan compared to aftermarket hubs
• Helps prevent costly drivetrain repairs
• Installs cleanly and fits correctly the first time

If you were advising a fellow boater at the fuel dock, you’d tell them: go OEM for your prop hub. It’s cheaper than a repair bill and delivers real peace of mind.

FAQ

Q1: Which engines does this hub kit fit?

It fits Mercury 40hp Command Thrust through 225hp FourStroke outboards that use a 1-inch propeller shaft.

Q2: What makes this better than aftermarket hub kits?

The Soft-Shift design dramatically cuts noise and vibration, and OEM engineering ensures better fitment and durability.

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

Check your owner's manual for prop-shaft diameter and cross-reference your existing Flo-Torq series.

Q4: Is this hub suitable for saltwater use?

Yes, it performs well in both saltwater and freshwater conditions.

Q5: Is installation straightforward?

Very. With basic tools, most boaters can install it in just a few minutes.