Mercury - Flo-Torq X Hub Kit Propeller Hub System Marine Composite 8M0182970. Overview. There's a special kind of confidence that comes from knowing the power behind you is connected to the water exactly the way Mercury intended. When you push the throttle forward and feel the boat lift, steady, and run true, you're reminded that the small parts matter just as much as the big ones. The Mercury Flo-Torq X Hub Kit, part number 8M0182970, delivers that quiet peace of mind - the kind that settles in