serious engine builds—especially those with custom camshafts or tuned for high RPMs—demand the additional precision that lifter shims provide

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2012-17 BMW F22 M235i / M235ix

238° / 272°

specifically designed for BMW M54 engines

BMW M20 Valve Springs by SuperTech 79 Series serious engine builds—especially those withSupertechs high performance valve springs for BMW M20 engines (including M20B20, M20B23, M20B25, and M20B27) are designed for serious engine builders and high performance enthusiasts who demand extreme durability at high RPM. Made from Superclean Chrome Silicon Vanadium Steel alloy, these valve springs deliver top tier strength, exceptional structural memory, and extended longevity, even in intense racing conditions. Engineered with computer aided