Manley NexTek Series Double w/o Damper 16pc Valve Springs 1.640 OD/.860 ID

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.

• Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
• Available in polished versions to reduce friction, improve fatigue life, and minimize load loss
• Ideally suited for Sportsman Drag Racing applications
• Better valve train stability and component life