ARP Pro series Wave-Loc rod bolts have a symmetrical “wave” on the shank that eliminates stress risers. These bolts also have a .0005 to .0070 in. interference fit to guarantee rod cap alignment and actually strengthen the connecting rod. Made from ARP2000 alloy with a tensile strength of about 220,000 psi, they can handle more than 12,000 lbs. of clamping force.