ACT SB10-HDSS Clutch Kit Low to Moderate Pedal Feel; Smooth Engagement w/ Stock to Low Gear Rattle; Monoloc Provides Uniform Loading on the Bearing & Pressure Plate to Assure Proper Alignment Premium Organic Friction Materials For Heat Tolerance, Faster Recovery From Overheating & Prevents Warping of Mating Surfaces; The Spring Tension of the Segmented Retaining Ring is Carefully Calculated & Tested for Optimal Performance Recommended For Street & Race Use; All ACT Pressure Plates Are Dynamically Computer Balanced for Smooth Operation at High RPM Monoloc is a 1-piece, Direct Replacement or Upgrade to the Standard, 2-piece Wedge Collar & Wire Ring Featured in Pull-type Clutches;Includes Perf Street Sprung Disc, Heavy Duty Monoloc Pressure Plate, Pilot Bearing, Release Bearing & Alignment Tool