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Manley NexTek double valve springs for Small Block Chevy LS series are engineered for sustained high-RPM durability in racing environments. NexTek springs resist pressure loss and valve-train degradation, delivering more consistent spring force deep into runs to reduce valve bounce and improve stability. They suit drag, short track and endurance applications where repeated high-load cycles demand reliable spring performance.
Manley Small Block Chevy LS Series 1.335 Double NexTek High Perf Valve Springs
