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The Manley NexTek valve springs are race-focused springs engineered to resist pressure loss and valve-train degradation under demanding conditions. They maintain more consistent spring force deep into a run to reduce valve bounce and improve high-RPM stability. Constructed from specially processed premium-grade chrome-silicon, they are targeted at drag, short track and endurance racing applications.
Manley NexTek Series 1.580 OD .832 ID .730 Lift Oval Track and Endurance Valve Springs
