The Ferrea Valve Spring Kit for BMW N63 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 N63 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 N63 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 N63 Applications:
BMW 5 Series
2010–2017 BMW F07 550i
2011–2016 BMW F10 550i
2017–Present BMW G30 M550i xDrive
BMW 6 Series
2012–2018 BMW F06 650i
2012–2018 BMW F12 650i
2012–2018 BMW F13 650i
BMW 7 Series
2009–2015 BMW F01/F02 750i/750Li
2015–Present BMW G11/G12 750i/750Li
2017–Present BMW G12 M750Li xDrive
BMW 8 Series
2018–Present BMW G14 M850i xDrive
2018–Present BMW G15 M850i xDrive
2018–Present BMW G16 M850i xDrive
BMW X5 Series
2010–2013 BMW E70 X5 xDrive50i
2014–2018 BMW F15 X5 xDrive50i
2019–Present BMW G05 X5 M50i
BMW X6 Series
2010–2014 BMW E71 X6 xDrive50i
2015–2019 BMW F16 X6 xDrive50i
2019–Present BMW G06 X6 M50i
BMW X7 Series
2018–2019 BMW G07 X7 xDrive50i
2019–Present BMW G07 X7 M50i
Alpina B5 Series
2011–2016 BMW F10 Alpina B5 Bi-Turbo
2017–Present BMW G30 Alpina B5 Bi-Turbo
Alpina B6 Series
2012–2018 BMW F06/F12/F13 Alpina B6 Bi-Turbo
Alpina B7 Series
2010–2015 BMW F01 Alpina B7 Bi-Turbo
2015–Present BMW G12 Alpina B7 Bi-Turbo
Alpina XB7 Series
2020–Present BMW G07 Alpina XB7
Note: Installation requires the expertise of an engine builder.