UMI Performance Rear Spring Kit - Stock Height - Black - GM A-Body 1964-66 Helmet Aero Cap 1978-1978 Buick Century

1978-1978 Buick Century

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2005-2008 GMC Envoy

Includes Transfer Case Yoke and Retaining Hardware

Pillar / Ditch Lights

UMI Performance Rear Spring Kit - Stock Height - Black - GM A-Body 1964-66 Helmet Aero Cap 1978-1978 Buick CenturyA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. UMI's springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides