Mercury - Quicksilver 835257Q1 Flo-Torq II Hub Kit Mercury, Mariner & MerCruiser Engines 835257Q1. Overview. The Quicksilver 835257Q1 Flo-Torq II Hub Kit brings smooth performance and proven protection to your Mercury, Mariner, Force, and MerCruiser setups. It's designed for Mercury/Mariner 40-60HP Command Thrust, 70-250HP outboards, Force 90-120HP, and Verado 150-300HP (6-cylinder, 1-inch shaft only) - as well as MerCruiser Alpha, Alpha One, and Bravo One sterndrives under 400HP.. This modular