1.535 Spring Cups - .570 ID

The 1.535 Spring Cups with .570 ID by Manley are precision-engineered valve spring retainers designed for high-performance engine builds and racing applications. These components are critical for ensuring optimal valve operation by transferring spring load directly to the valve stem while maintaining consistent geometry under extreme conditions.

Manufactured from hardened steel, these spring cups are built to withstand the cyclic stress associated with high-lift camshafts and aggressive spring rates. Their precision machining and tight tolerances ensure repeatable spring preload and consistent valve timing across the entire RPM range, making them essential for serious engine builders.

Engine builders and performance shops will find these spring cups invaluable when upgrading camshaft profiles or increasing valve lift. Proper fitment requires careful measurement of existing spring stack height and preload specifications, ensuring compatibility with popular platforms like LS and small-block Chevy engines.