Supertech BMW S42/M42/M50/S50/M52/M54 Dual Valve Spring Kit

The Supertech SPRK-H1000D-BM is a high-performance dual valve spring kit meticulously engineered for a range of BMW engines including the S42, M42, M50, S50, M52, and M54. This kit is specifically designed for performance enthusiasts and racing applications, enabling the use of higher lift camshafts and effectively preventing valve float at elevated RPMs. Each kit typically comprises 24 dual valve springs, precision-matched retainers, and corresponding spring seats for a complete valvetrain overhaul. The springs undergo a gas nitriding process before shot peening to significantly improve fatigue life, ensuring durability and consistent performance under extreme conditions.