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The GSC Power Division S58 Beehive Valve Spring and Titanium Retainer Kit is a direct-performance valve train upgrade for BMW S58 engines. Featuring beehive springs and Ti retainers, it supports high boost conditions up to 70 PSI to help control valve motion under elevated cylinder pressures. Use it when upgrading forced-induction or high-boost tuning to retain valve stability and reduce float risk.
GSC P-D BMW S58 Beehive Valve Spring & Ti Retainer Kit (Max Boost 70PSI)
