ZRP Crankshaft for BMW M3 S50B30 (Euro Version)

The ZRP crankshaft for the BMW M3 S50B30 is crafted from aerospace-grade 4340 solid billet steel, ensuring top-tier quality and performance. Designed with precision from extensive experience, this crankshaft offers optimal engine performance. The production process includes rigorous inspections to maintain high quality and tight tolerances for perfect fitment. The crankshaft is fully balanced to 2gr.cm /- 0.1 using advanced Sunnen machines, with a balance results report included.

Product Features and Design

• Undercut profiled counterweights to minimize weight and reduce rotating mass.
• Aero-Wing counterweights for reduced windage to increase horsepower.
• Drilled rod journals for weight reduction.
• Straight oil holes for better oiling of the rod journals.
• Chamfered oil holes.
• Journal radius to disperse load stress.
• Tapered rod journals for weight reduction.

Technical Features of ZRP Crankshafts

• Full CNC machining.
• ION (Plasma) Nitride process for hardening.
• Multi-stage heat treatment.
• Shot peening for stress release.
• 100% Magna-fluxing for flawless surface finish.
• Heat treatment for superior wear resistance.
• Micro-polishing for longer bearing life.
• Sonic tested and X-rayed to ensure a reliable end product.