Manley High-Performance Valve Spring Kit for Ford 4.6L/5.4L DOHC Modular V8 — 4 Valves per Cylinder

Description

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

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