The importance of pressure plate bolts in a high performance street or racing application cannot be emphasized nearly enough. These fasteners play a key role in both the performance and the safety of the vehicle. Because of this, ARP has developed special pressure plate bolts that are application specific to ensure the optimum grip length. ARP offers high performance series bolts that are made from premium grade chrome-moly and hardened to a nominal tensile strength of 180,000 psi. The Pro Series bolts, originally developed for NASCAR use, are rated at 200,000 psi tensile strength. Both models feature a large diameter, low profile design. Complete with washers.