This clutch mechanism from Belt Drives Ltd. significantly lightens clutch pull at the lever while providing slip-free lock-up. Each unit incorporates a designated number of steel ball bearings set in a model-specific diaphragm assembly. It comes as standard equipment with new 2-inch BDL belt drives and is available for retro fit to most early BDL units, stock Harley-Davidson models (1998-2007) and 1990-2007 Primo Pro-Clutch belt drives. The kit retails for $200.