BMW N63 Valve Spring Kit by Ferrea

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 2019–2023     BMW G05     X5 M50i BMW X6 Series 2010–2014     BMW E71     X6 xDrive50i 2015–2019     BMW F16     X6 xDrive50i 2019–2023     BMW G06     X6 M50i BMW X7 Series 2018–2019     BMW G07     X7 xDrive50i 2019–2022     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 2015–2019     BMW G12 Alpina     B7 Bi-Turbo Alpina XB7 Series 2020–2022     BMW G07 Alpina     XB7 Note: Installation requires the expertise of an engine builder.