Mini Cooper S - ZRP / 85.8mm Ultra - Light weight Crankshaft

Made from Billet high tensile strength Steel alloy

CNC Machined for superior tolerance
Multi heat treatment stage
Nitrided hardened for superior wear resistance
Magna-fluxed to insure quality
Shot peened for improved fatigue life
Micro-polished for longer bearing life
Journal radii to disperse load stress
Balanced 2g.cm for the 4 cylinders and 4g.cm for the 6 cylinders.
Aero-Wing Counterweights For Reduce Windage To Increase Horsepower
Pendulum Undercut Counterweights Reduce Weight and Rotating Mass