Quicksilver Flo-Torq SSR HD Propeller Hub Kit for Mercury 200-400hp 4-Stroke Outboards with 1.25" Diameter Prop Shaft - 8M0101603

The Quicksilver Flo-Torq SSR HD Propeller Hub Kit (8M0101603) is a premium propeller hub system engineered for high-horsepower Mercury 4-stroke outboards. Designed with Quicksilver’s advanced Soft-Shift Rubber (SSR) technology, this hub kit significantly reduces shift noise, vibration, and harshness, delivering smoother and quieter power transfer from engine to propeller. It is one of the best Flo-Torq replacement hub kits for Mercury 200–400hp outboards, helping eliminate prop clunk while improving overall ride quality.

This SSR HD hub kit is specifically designed for Mercury 200–400hp 4-stroke outboards with 1.25" diameter propeller shafts. Ideal for boaters looking to upgrade or replace their propeller hub system, it enhances shifting performance and reduces drivetrain shock during gear engagement.

Features:

• Flo-Torq SSR HD Hub Kit is for use on 200-400hp Mercury fourstroke outboards with 1.25 in. propeller shafts
• Helps prevent shifting noise and propeller rattle to deliver quieter, smoother, delivery of your engine's power to the propeller
• SSR technology provides 22-23% reduction in shift event noise virtually eliminating shift clunk
• Each kit includes the SSR drive sleeve, 3-washer set (washer, thick washer and cupped Belleville washer), tabbed lock washer and locking prop nut
• Installation is quick and easy with the Quicksilver floating prop wrench and Quicksilver Prop Block or common shop tools
• The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original equipment replacement engine parts, oils, and accessories, but also works to serve all original equipment brands in the marine and powersports industries.

Fitment:

• Mercury fourstroke outboards with serial No. lower than 2B244273 must see your dealer for an updated engine calibration before using this hub kit. 
• 40hp CT through 225hp Mercury fourstroke outboards with 1" diameter propeller shafts used in general purpose and non-surface piercing propeller application installations use the SSR hub kit 8M0150152.
• 40hp CT through 225hp Mercury fourstroke outboards with 1" diameter propeller shafts used in high performance and/or surface piercing installations and 250-350hp Mercury fourstroke outboards, use the SSR Solid hub kit 8M0101604.

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