Ferrea High Performance Valve Kit, BMW N55/S55

Ferrea Competition Plus Valves are celebrated for their extreme duty performance and industry-leading reliability. Designed specifically for the BMW N55 and S55 engines, these valves are crafted from aerospace-grade alloys like EV8-Z18, delivering superior tensile strength and exceptional durability for high-performance applications.

Ferrea's two-step slow forging process ensures optimal grain flow and minimizes internal stress, providing unmatched durability for your engine. Each valve undergoes a rigorous 48-hour heat treatment and stress-relief process, ensuring optimal molecular integrity. Finished with avionics-grade hard chrome plating and featuring a specially hardened tip, these valves are engineered to withstand the extreme demands of performance use.

Upgrade your BMW N55 or S55 engine with the Ferrea Valve Kit for greater strength, improved heat resistance, and outstanding reliability—perfect for both street performance and motorsport builds.

Key Features:

• Aerospace-grade alloy construction for exceptional strength and longevity.
• Slow forging process for optimized grain flow and reduced material stress.
• Avionics-quality hard chrome plating for enhanced wear and heat resistance.

Replaces BMW part # 11347847033 and # 11347847034. 

Standard Size is 32mm Intake / 28mm Exhaust

Kit Contents: 

• (12) Intake Valves
• (12) Exhaust Valves 

Triple Groove Valve Design 
Will work with factory valve locks " Valve Keepers"

BMW N55 Applications:

1 Series

2010-2013     E82/E88     135i
2012-2016     F20/F21     M135i

2 Series

2014-2016     F22/F23     M235i
2016-2018     F87     M2

3 Series

2010-2015     E90/E91/E92/E93     335i
2012-2015     F30/F31/F34     335i
2015-2016     F30/F31     340i

4 Series

2013-2016     F32/F33/F36     435i
2016     F32/F33/F36     440i

5 Series

2010-2016     F10/F11     535i
2010-2017     F07     535i GT

6 Series

2011-2018     F12/F13/F06     640i Gran Coupe

7 Series

2012-2015     F01/F02     740i / 740Li

X1 Series

2013-2015     E84     X1 xDrive35i

X3 Series

2011-2017     F25     X3 xDrive35i

X4 Series

2014-2017     F26     X4 xDrive35i
2016-2017     F26     X4 M40i

X5 Series

2011-2018     E70/F15     X5 xDrive35i

X6 Series

2011-2019     E71/F16     X6 xDrive35i

ALPINA N55 Applications:

B3 Series

2013-2018     F30/F31     B3 Bi-Turbo

B4 Series

2014-2019     F32/F33     B4 Bi-Turbo

B5 Series

2010-2016     F10     B5 Bi-Turbo

B6 Series

2011-2018     F12/F13/F06     B6 Bi-Turbo Gran Coupe

BMW S55 Applications:

2 Series

2018-2020     F87     M2 Competition

3 Series

2012-2018     F80     M3

4 Series

2014-2020     F82     M4
2014-2020     F83     M4