BMW S63 Valve Spring Kit by Ferrea

The Ferrea Valve Spring Kit for BMW S63 engines is engineered for superior durability and performance under extreme conditions. This kit replaces BMW part numbers 11340039494, 11340054492, 11347578825, 11347572451, 11347504271, 11347614134, and 11340150843.

Factory valve springs can struggle to meet the demands of high boost, aggressive cam profiles, and sustained high RPM, leading to valve float and potential engine failure. Ferrea valve springs are designed to prevent these issues by offering increased seat pressure and improved coil bind clearance, ensuring precise valve control at all RPM ranges.

By stabilizing valve motion, these upgraded springs enhance airflow efficiency and overall cylinder head performance, allowing for higher rev limits and maximum power output. Whether you're building a high-performance street car or a dedicated race engine, Ferrea valve springs provide strength and consistency.

Kit Contents:

• (32) High Performance Chrome Silicon Valve Springs
• (32) Precision-Fit Spring Seats
• (32) Titanium Spring Retainers
• (32) Viton Valve Stem Seals

Key Benefits:

• Optimized for BMW S63 Engines
• Superior Valve Control: Premium chrome-silicon steel valve springs maintain stability at high RPMs.
• Lightweight Titanium Retainers: Increase engine response while decreasing the risk of valve float.
• Precision Spring Seats: Designed for exact compatibility with S63 engines for optimal support.
• Ideal for High-Performance Applications: Perfect for racing, track use, and high-performance street setups.

Spring Kit Specifications
Seat Pressure: 90 lbs
Open Pressure: 170 lbs
Max Net Lift: 11 mm
Coil Bind: 24.85mm
Rate Inch: 201 lbs
ID: 16.82mm
OD: 23.40mm

BMW S63 Applications:

BMW M5 Series

2011 - 2016 BMW F10 M5
2017 - 2023 BMW F90 M5

BMW M6 Series

2012 - 2018 BMW F12 M6
2012 - 2018 BMW F13 M6

BMW X5 M Series

2009-2013 BMW E70 X5 M
2015-2018 BMW F85 X5 M
2019-2023 BMW F95 X5 M

BMW X6 M Series

2009-2014 BMW E71 X6 M
2015-2018 BMW F86 X6 M
2019-2023 BMW F96 X6 M

BMW 8 Series

2018-2023 BMW G15 M850i
2018-2023 BMW G16 M850i Gran Coupe

BMW M8 Series

2019-2023 BMW F91 M8 Convertible
2019-2023 BMW F92 M8 Coupe
2019-2023 BMW F93 M8 Gran Coupe

BMW ALPINA Series

2018-2023 BMW ALPINA B5 Bi-Turbo
2016-2023 BMW ALPINA G12 B7
2020-2023 BMW ALPINA G07 XB7

Note: Installation requires the expertise of an engine builder.