Pressure plate is CNC-machined of 2024-T3 billet aluminum Steel inner hub Clutches progressively increase pressure as RPMs increase Easily adjustable by adding or subtracting weights on six pressure arms 100% increase in clutch capacity For stock or high-performance motors Allows for lighter lever pull Can be run wet or dry Smooth, precise shifting Designed to fit in stock-type basket For use with open primary or Barnett Performance Products Scorpion primary cover