The UMI Performance thrust bearing kit is made to sit between a coilover spring and its seat so the spring seat can rotate on a bearing, simplifying ride-height adjustments. Recommended for easier on-car adjustment, the kit includes a spanner wrench and is advised when adjusting vehicle height; it’s compatible with Viking and UMI coilovers. While not strictly required for installation, it improves adjustment ease and longevity of the setup.
UMI Performance Thrust Bearing Kit Viking Coilovers and UMI Coilovers + Spanner Wrench