The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today's sticky tire compounds, or the acceleration and deceleration of oval track cars, puts considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. They're forged from premium grade 8740 chrome moly steel, and they are heat-treated to a nominal rating of 200,000 psi tensile strength. Where required, the kits include specially hardened and precision-ground washers.