2000601 is a modified rigid-hub street disc featuring premium organic friction materials with high copper content for better heat transfer and steel-backed lining for greater burst strength and durability. These discs are modified with reduced marcel for faster shift action to complement ACT pressure plates. The chrome-moly hub is heat-treated for strength and durability. Rivet design and materials are carefully selected for maximum strength. Lightweight, rigid-hub design allows for quicker shifting and engagement. ACT's street rigid-hub discs provide race-proven performance with street manageability.