Developed entirely in-house by Stopping Power and exclusive to us, our upgraded BMW N57/B57 valve springs are engineered for high-performance diesel applications where factory components simply aren’t enough.

Designed to deliver significantly improved valve control under increased boost, higher RPM, and more aggressive camshaft demands, these springs offer a 55% increase in stiffness over OEM, helping to eliminate valve float and maintain precise valvetrain stability in high-power builds.

We specifically recommend these springs for applications running 3 bar of boost and above, where increased cylinder pressure and valvetrain demand make upgraded spring pressure essential for maintaining reliability and performance.

Manufactured from premium SWOSC-VHV spring steel, these valve springs are built for extreme durability and long-term reliability. SWOSC-VHV is one of the highest-grade valve spring materials available, specifically developed for high-stress, high-cycle applications. Its exceptional tensile strength, fatigue resistance, and heat tolerance make it the ideal choice for performance valve springs, especially in demanding diesel environments where sustained cylinder pressures and exhaust temperatures are significantly higher than standard.

• Developed in-house by Stopping Power

• 55% stiffer than OEM valve springs

• Recommended for 3 bar boost and above

• Manufactured from premium SWOSC-VHV spring steel

• Shot peened for increased fatigue resistance and durability

• Blackened for corrosion protection and surface longevity

• Designed for RPMs of up to 6.5k

Suitable for all BMW N47, N57 and B57 engines.

Professional installation is highly recommended.