Mercury – Flo-Torq SSR HD Propeller Hub Kit | Heavy-Duty Propeller System | Advanced Rubber Sleeve Design | 8M0101601

Overview

There’s a moment, right before you throttle up, when you can feel the whole boat waiting on the prop to grab water and go. When everything is tuned right, that transition is smooth—no jolt, no snap, just a clean surge forward. That’s exactly the kind of assurance the Mercury Flo-Torq SSR HD Hub Kit brings to high-horsepower outboards. It’s engineered for boats that work hard, run fast, and push heavy loads. And for the skipper behind the wheel, it delivers something even more valuable than performance: the peace of mind that your drivetrain is protected, even when conditions turn unpredictable.

Key Features

• Soft Shift Rubber sleeve reduces shift clunk and absorbs minor impact loads
• Designed for heavy-duty, high-torque applications
• Precision-built hub assembly for 1.25-inch prop shafts
• Includes prop nut, bushing kit, hub assembly, and three-piece washer kit
• Developed to meet Mercury Marine’s strict engineering and durability standards

Engine & Boat Compatibility

• Fits Mercury and Mariner outboards with 1.25-inch prop shafts
• Compatible with 225–250 horsepower Pro XS models using the TorqueMaster II gearcase
• Works with 300 and 350 horsepower Verado engines equipped with the 5.44-inch heavy-duty gearcase
• Approved for Verado 400R (excluding all V10 Verado models)
• Often found on offshore center consoles, lake cruisers, tournament bass boats, and performance-minded multi-species hulls

Performance & Practical Benefits

The Flo-Torq SSR HD kit brings a noticeable difference to how your boat feels on the water. That muted, soft shift isn’t just about comfort—it’s a sign that the Soft Shift Rubber sleeve is absorbing the stress spikes that normally beat up your drivetrain. You’ll feel each gear engagement become smoother and more controlled, which helps reduce long-term wear and tear on the gearcase.

Under heavy acceleration, the hub remains tight and true, keeping your propeller locked in with solid, secure engagement. This stability pays off in consistent hole shot, steady mid-range control, and predictable handling when you’re running through chop or pulling a load. The kit is built to last, with components designed to handle high-torque engines without letting vibration or repeated impact degrade the system.

For fast boats, hard-running boats, or big-water rigs, this kit adds a layer of confidence that’s hard to put a price on.

Why Buy OEM

A prop hub isn’t a part you want to gamble with, especially when it’s responsible for transferring every bit of power your engine produces. An aftermarket hub might fit, but it won’t match the precision, resilience, or shift quality engineered into a Mercury Marine part. With the 8M0101601 hub kit, you get the exact tolerances, materials, and protective features your engine was built around. It’s a real-world investment in reliability—one that keeps you on the water instead of on the trailer.

FAQ Section

Q1: Which engines does the Mercury 8M0101601 Flo-Torq SSR HD kit fit?

It fits high-horsepower Mercury and Mariner outboards with 1.25-inch prop shafts, including Pro XS TorqueMaster II, Verado 300–350hp, and the 400R.

Q2: What sets it apart from aftermarket hub kits?

The Soft Shift Rubber sleeve and heavy-duty engineering give you smoother shifting, better impact protection, and a longer-lasting drivetrain.

Q3: How can I confirm it’s the right hub for my setup?

Match your engine model and prop shaft size, or check your owner’s manual for recommended hub and thrust washer part numbers.

Q4: Is it suitable for both saltwater and freshwater boats?

Absolutely. It’s built for high-load, real-world marine environments of all kinds.

Q5: Is installation beginner-friendly?

Most boaters with basic propeller experience can install it easily, as long as they follow torque and washer order guidelines.