A large number of connecting rod manufacturers have chosen ARP bolts as standard equipment. They’re proud to advertise their products as being equipped with ARP bolts. And for good reason. The “weak link” in a connecting rod has always been the bolt, and racers know that nobody builds a better bolt than ARP. Forged in-house at ARP using only the finest quality materials Heat-treated using special vertical racks to assure complete 360° penetration Threads rolled after heat-treat to provide up to 10-times longer fatigue strength Precision CNC-machined to exacting specifications Specially designed for optimum reliability in each application.

Allows evos with standard internals to run higher boost levels safely.