BMW M50 / M52 / S50 / S52 Valve Kit by Ferrea

Ferrea Competition Plus Valves are widely recognized as one of the most dependable extreme duty valves available. Designed specifically for the BMW M50, M52, S50, and S52 cylinder heads, these high-performance valves are made from aerospace-grade alloys, including EV8-Z18, delivering the tensile strength and resilience needed for high-revving, demanding builds.

Ferrea’s exclusive two-step slow forging process optimizes the internal grain structure of the valves, resulting in minimized stress and increased durability. Each valve undergoes a 48-hour heat treatment and stress-relief process, ensuring consistent reliability and peak molecular integrity. With avionics-quality hard chrome plating and a specially hardened tip, these valves are built to thrive in extreme conditions, whether for street performance or racing.

Fortify your BMW M50, M52, S50, or S52 valvetrain with a Ferrea Valve Kit for superior heat resistance, enhanced durability, and greater tensile strength—perfect for performance enthusiasts and track applications.

Key Features:

• Aerospace-grade alloy construction for outstanding strength and longevity
• Two-step slow forging for optimized grain flow and reduced material stress
• Avionics-grade hard chrome plating for heat resistance and longevity

Whether you're building an E36 M3, E34 525i, or Z3 M Roadster, this Ferrea Valve Kit will offer your BMW M50, M52, S50, or S52 engine unmatched reliability and power.

Factory valve size is 6mm, with 33 mm intake valves and 30.5 mm exhaust valves. Designed with a triple groove valve design and compatible with factory valve locks (AKA valve keepers).

Kit Contents:

• 12x Intake valves
• 12x Exhaust valves

BMW M50 Applications:

3 Series

1990-1995     E36     320i / 325i / 325is
1994-1996     E35/E36     318ti

5 Series

1990-1996     E34     520i / 525i
1991-1996     E34 Touring     520i / 525i

Z Series

1995     E36/E37     Z3 2.0i / 2.5i

BMW M52 Applications:

3 Series

1994-1999     E36     320i / 323i / 323is / 328i / 328is
1997-2000     E35/E36     318ti / 323ti

5 Series

1996-1998     E39     520i / 523i / 528i

7 Series

1996-1998     E38     728i / 728iL

Z Series

1996-1999     E36/E37/E38     Z3 2.0i / 2.2i / 2.8i

BMW S50 US Applications:

3 Series

1994-1995     E36     M3

BMW S52 Applications:

3 Series

1996-1999     E36     M3

Z Series

1998-2000     E36/E37/E38     Z3M