We are now offering a crankshaft stud/nut/washer combo for all model year Shelby GT500s. Designed here at Kinetik Motorsport, this is the absolute best solution for achieving a strong, stable, and safe clamp on your crank pulley. A must-have for anyone running oversized/overdrive balancers, larger than stock superchargers, or using a 2-step launch control. ZERO modifications required to vehicle or engine. Installation can be done in your driveway, and will take roughly an hour to complete. Includes stud, washer, nut, and packet of ARP Ultra-TorqueLearn More