Flo-Torq SSR HD hub kit 8M0101601 is for use on Mercury or Mariner outboards with the 1.25" propeller shaft, including 225 hp through 250 hp Pro XS (with the Torque Master II gearcase), 300 hp and 350 hp Verado outboards with the 5.44" HD gearcase and the Verado 400R outboards. See your owner's manual for installation instructions, the Flo-Torq hub, thrust washers and prop nut part numbers to best fit your engine or drive. Mercury Marine’s passion for performance is matched by your drive for the new, the unknown. Our legendary reliability and durability let you boldly embrace your next adventure-large or small-knowing you’re backed by the best quality design, engineering, and materials.

• The Flo-Torq SSR HD is a combination of Mercury’s new SSR technology along with the durability of a solid stainless-steel hub, allowing it to be the quietest and smoothest shifting propeller hub system in the market for high horse-powered outboards
• 25% reduction in transom vibration
• Application: Mercury Outboards with 1.25" propeller shaft 225/250 HP Pro XS, 300/350 HP Verado, 400R Verado