The 3-Pad Slipper Conversion is a complete parts set to change a RC10B74.1 slipper from the kit 2-pad slipper to a 3-pad slipper clutch. The kit design is a 11mm I.D. pad with a heavy 500lbin spring, ideal for high-load carpet. The 3-pad conversion is a standard 19mm I.D. pad with a softer spring, which delivers a smoother throttle feel with slower engagement for racers wanting a softer clutch feel. Instructions included. Uses the #92275 RC10B74.1 Slipper Shaft Outdrive Set (not included) from the RC10B74.1 kit.