Valve Spring

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.

Additional Information

Manley Valve Spring, SPRING-1.311 SINGLE HEMI Drag PaK

Part Type

Engine Valve Spring Kit

• Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
• Proprietary multi-step heat treating minimizes load loss
• Shot-peened to MIL spec for max fatigue life
• Tightly controlled open-end flatness reduces valve stem side loading
• Tip thickness designed to eliminate overload breakage

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Reference Information

SPRING-1.311 SINGLE HEMI Drag Pak