UMI’s leaf spring pin kit is engineered to provide strength, precision, and reliability for performance suspension setups. The kit includes four custom extended-length locating pins, each manufactured from high-strength 4140 chrome moly (CrMo) steel for superior durability compared to factory hardware. These precision-machined pins are specifically designed to keep the leaf springs securely centered when installing lowering blocks, pinion angle shims, or other suspension geometry changes that require additional clamping length.
