Heavy-duty OE replacement connecting rod Certified 8620 AISI steel provides superior strength Uniquely designed big end uses strategically located side scalloping vent slots to minimize high-RPM bearing race distortion Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc Hot Rods uses the latest in caged needle roller bearing designs for high RPM longevity Thrust washers are manufactured from bronze phosphor and are silver coated Rod assembly sold complete with rod, crankpin, crankpin bearing, top-end bearing and thrust washers Compatible with Hot Rods and OE crankshafts Made in U.S.A.. CONNECTING ROD 8724