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SuperTech Conical Spring Kit For BMW N54 / N55 / S55 Turbo - SPRK-FE20N54-BE2 These images are representative, actual product images may differ.DescriptionBRAND NEW IN BOXFITMENT For BMW - N54 TurboFor BMW - N55 TurboFor BMW - S55 Turbo Description All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher durability at high rpms. Our valve springs are computer designed to ensure that wire stress levels do not overpass the limits of stress. This c...

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