Mercury - Flo-Torq SSR Solid Hub Kit Performance Propeller System Precision Marine Construction 8M0101602. Overview. When you run a boat that lifts high, bites hard, and lives on the edge of the water's surface, you learn quickly that not all prop hubs are created equal. Surface-piercing setups demand more-more strength, more control, more forgiveness when conditions get unpredictable. That's why the Mercury 8M0101602 Flo-Torq SSR Solid Hub Kit feels like such a welcome upgrade. It brings a sens