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Manley NexTek valve springs are a race-focused valve spring series engineered to resist pressure loss and valve-train degradation in demanding competition environments. Processed from premium-grade chrome-silicon, these springs are swirl-polished and validated by engine builders for consistent spring force deep into a run, reduced valve bounce, and improved stability for high-RPM race applications.
Manley Circle Track Roller Polished NexTek Series Valve Springs
