Simplify your next S58 engine build with this all-in-one Competition Valve & Spring Kit, now available from 5150 AutoSport. Featuring Ferrea’s single groove stainless steel valves and a complete high-performance valve spring kit, this package eliminates the guesswork—giving engine builders a reliable, track-proven solution in a single click.

Built for Power. Engineered for RPM.

This kit includes standard-size Ferrea Competition Plus intake and exhaust valves (30.1mm intake / 28.5mm exhaust) made from aerospace-grade EV8-Z18 material. These single groove valves are ideal for high-lift camshafts and sustained high-RPM use. Ferrea’s two-step slow forging and 48-hour heat treatment process ensures exceptional strength, heat resistance, and fatigue life—even under extreme boost or racing conditions.

Included Components:

• 24 Ferrea Single Groove Valves
  • 30.1mm intake / 28.5mm exhaust
  • Avionics-grade chrome-plated stems
  • Hardened tips for increased durability
  • EV8-Z18 stainless for high temperature resistance
• Ferrea Valve Spring Kit
  • 24 premium chrome-silicon steel valve springs
  • 24 lightweight titanium retainers
  • 24 precision-fit valve spring seats

Ferrea’s spring system is engineered to maintain valve control at high RPM, prevent float, and handle the increased load of aggressive cams and high boost. Lightweight titanium retainers reduce valvetrain mass and improve engine response, while the included spring seats ensure long-term reliability under high stress.

Why Choose This Kit:

• One-click solution: No need to piece together components
• Ideal for high-RPM, high-lift camshaft builds
• Supports boosted, track, and motorsport applications
• Designed specifically for the BMW S58 engine
• Trusted Ferrea quality backed by decades of motorsports experience

Recommended for professional builds, high-performance street use, or full-race applications.

Installation Note:
Professional installation by a qualified engine builder is strongly recommended to ensure optimal performance and reliability.