06/2018 —  G15

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

these pistons are an investment in performance and engine longevity

238° / 272°

Each valve spring is crafted from premium Superclean Chrome Silicon Vanadium Steel alloy

BMW M20 Valve Springs by SuperTech 79 Series 06/2018 — G15Supertechs 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