ARP High-Performance Rod Bolt Kit 9mm Toyota MR2 4AGE 85-89
Because factory connecting rods (or aftermarket versions of OEM rods) are used in a variety of applications from rebuilt stock motors to modified powerplants used in circle track, marine and drag racing engines - including those with superchargers and/ or nitrous oxide injection systems - ARP offers replacement rod bolts that are substantially better than the stock OEM and most aftermarket bolts.
A premium grade 8740 alloy chrome moly steel is used to manufacture ARP High Performance connecting rod bolts. This material is heat-treated to provide a tensile strength in the 200,000 psi range, which is substantially stronger than the OEM bolts. Cycle testing shows ARP High-Performance rod bolts to be nearly five times more reliable than stock bolts.