The folks at BDL Belt Drives are always on the cutting edge of H-D high-performance technology. They have made a living out of distributing high horsepower and big torque for extra boosts of power, but they also produce a mean clutch.
The Ball Bearing Lock Up Clutch 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. By replacing the factory pressure plate and springs, stock applications use the factory diaphragm spring and associated hardware. The new ball bearing diaphragm design provides featherlight lever control, smoother operation, and more positive lock up. For racing applications BDL offers heavier carbide bearings that can be used to literally tune the clutch. The new BDL Ball Bearing Lock Up Clutch is standard equipment with new 2-inch BDL belt drives, and is available for retrofit to most early BDL units, stock H-D models from 1998 through 2007, and 1990 to 2007 Primo Pro-Clutch belt drives.