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Valve Spring Kit BMW N54/N55 Turbo



£ 550.02
excl. 20% VAT , Free shipping
£ 846.18
£ 660.02
incl. 20% VAT , Free shipping
instead of: £ 846.18
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Order within the next 0 hours 0 minutes 0 seconds and your package is expected to arrive between 24.06.2026 - 25.06.2026

Valve Spring Kit for BMW N54/N55 Turbo

Optimised Valve Control for High-RPM and Performance Applications

Designed for durability, stability, and track-focused operation

The Conical Valve Spring Kit with Steel Retainers for the BMW N54/N55 Turbo engine is engineered to deliver reliable valve control, improved RPM stability, and long-term durability under demanding operating conditions. This kit is specifically designed for performance-oriented N55 applications where precise valvetrain control is critical.

The conical valve spring design tapers from the base to the top, significantly reducing spring and retainer mass. This reduction in moving mass improves harmonic control and enhances valvetrain stability at elevated engine speeds, allowing the engine to operate safely and consistently at higher RPM.

Manufactured from premium chrome-silicon alloy, the valve springs are heat-treated to provide excellent fatigue resistance and consistent spring pressure. The included retainers are precision-machined for strength and reliability, ensuring stable valve motion even under aggressive driving or motorsport conditions.

Features:

  • Conical valve spring design reduces overall valvetrain mass
  • Titanium retainers provide high strength and reliable valve control
  • Improved harmonic damping for stable valve operation at high RPM
  • Matched spring sets ensure consistent seat and open pressures
  • CNC-machined components for precise fit and long-term reliability

Benefits:

  • Maximum RPM stability through reduced moving mass
  • Improved valve control for aggressive camshafts and track use
  • Reduced risk of valve float under high-speed operation
  • Enhanced durability of the valvetrain under high load and stress
  • Race-proven performance for high-output BMW N54/N55 engines
Note: BMW N54 / N55 Conical spring kit SPR-FE20-BE(24) - 75lbs @ 36.5mm - Rate: 8lbs/mm - CB @ 13.3mm lift - Max lift: 12mm - Intake RET-BMN54/TI (12) - Exhaust RET-BMN54/TE (12) - Use with Factory valve stem Seal
Features
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