The original and still the best aftermarket connecting rodMachined from 8620 case hardened Nickel Chrome Moly steelThe bores are hardened and finish honed for ultimate precision down to the micronIncludes the most advanced and durable bearings, crank pins and thrust washersCase hardened and silver coated KU bearings (big end) and KZ bearings (wrist Pin)Double honed bearing surfaces provide a reliable, high rpm rodDouble drilled small end, as well as oiling grooves for increased lubricationEach crank pin is created from hot-rolled ASTM 4115 steel and case-hardened to a level of 58?C62 RcPart Number: 8617Fitment:2002-2008 Honda CRF 450 R