Manley Valve Spring, SPRING-1.640 DOUBLE Chevrolet even under heavy load

even under heavy load

The STB003s connect the strut mounts to reinforce unibody and suspension

The upper a-arm features rod ends for smooth operation and the ability to adjust without shims

Popular for historic and vintage transmissions

Manley Valve Spring, SPRING-1.640 DOUBLE Chevrolet even under heavy loadFrom 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.