1.260 Dual Valve Springs (16)

The PAC Racing Springs 1.260 Dual Valve Springs (16) is a precision-engineered component designed for circle track racing applications. These dual valve springs feature a 1.260-inch outer diameter and are supplied as a complete set of 16 springs, ensuring a matched set for all cylinders. This eliminates the guesswork of sourcing individual pairs, making it ideal for competitive racing environments.

Designed to maintain consistent valve train geometry across the full operating RPM range, these springs are critical in circle track racing where engine speeds fluctuate rapidly. The 610 lb/in spring rate provides adequate control without excessive preload, which can lead to increased parasitic loss or heavier pushrods. This balance is essential for optimizing performance in racing conditions.

Engine builders and circle track competitors will benefit from the reliability and performance of this spring set, which is suitable for naturally aspirated or moderately boosted engines. By matching all 16 springs in a single set, users can reduce variability in valve dynamics, directly impacting combustion consistency and power delivery.