EMPI 4340 Chromoly 82MM Stroker Crank, EMPI has developed this high quality counter-weighted Stroker Crank with the serious racer in mind. Multiple die stamp forged from 4340 chromoly (One of the strongest materials available for crankshafts). Cranks are then magna fluxed, shot peened and all journals are nitrided, precision ground and micro polished. Additional features include cross drilled, chamfered oil holes, dynamic balancing, 8 dowel and extra long 8mm dowel pins. Choose the journal size and stroker combination that best suits your application.