Over double the strength of the OEM shafts. Precision ground from 4140HT steel; gas nitrided and final surface treated. Kit includes includes 4 rocker arm shafts. OEM replacement reference 17611-83A
Over double the strength of the OEM shafts. Precision ground from 4140HT steel; gas nitrided and final surface treated. Kit includes includes 4 rocker arm shafts. OEM replacement reference 17611-83A