Mercury 8M0101601 Flo‑Torq® SSR HD Hub Kit – Heavy‑Duty Hub for 1.25" Propeller Shafts

The Mercury Flo‑Torq® SSR HD Propeller‑Hub‑Kit 8M0101601 was specially developed for heavy‑duty applications. The integrated Soft‑Shift‑Rubber (SSR) sleeve significantly reduces shifting noise and impact ("shift clunk") while helping to protect the drivetrain from minor impact-related damage.

This hub kit is designed for Mercury and Mariner outboards with a 1.25-inch propeller shaft and is particularly suitable for high‑performance engines with heavy‑duty gearboxes. In combination with compatible propellers, the SSR HD system ensures smooth operation, seamless shifting, and durable power transmission.

The set contains all the components required for installation and operation. For optimal fit and safety, check before installation which Flo‑Torq hub, thrust washers, and propeller nuts are specified in the engine or service manual.

Compatibility (Selection):

• Mercury / Mariner outboards with a 1.25" propeller shaft
• 225–250 hp Pro XS with TorqueMaster II gearbox
• Verado 300 hp and 350 hp with 5.44" HD gearbox housing
• Verado 400R
• Not suitable for Verado V10 models

Package contents:

• Propeller nut
• Complete Flo‑Torq® SSR HD hub set
• Bushing kit
• Three-piece washer kit

Product features:

• Genuine Mercury Flo‑Torq® SSR HD system
• Soft‑Shift‑Rubber minimizes shifting noise and vibrations
• Additional protection for the gearbox and drivetrain
• Designed for high performance and heavy‑duty applications
• Suitable for 1.25" propeller shafts
• Compatible with high‑performance Verado and Pro XS engines
• OEM quality – developed and manufactured to Mercury specifications