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UMI 2" lowering spring set for 1964–1966 GM A‑body vehicles lowers ride height by 2" while improving handling and reducing body roll. Front springs are wound from 5160 CrSi wire at 530 lb/in and rear springs from 9254 CrSi at 130 lb/in, offering consistent linear rates that suit Auto‑x and Pro‑Tour use. Finished in durable black powder coat and made in the USA, these springs are engineered to work with common Big Block and LS applications; lightened cars may require spring trimming.
UMI Performance 64-66 GM A-Body Spring Kit 2in Lowering
