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UMI Performance's competition front weight jack system for 1982–1992 GM F-body swaps the factory spring for an adjustable jack bucket and a 1050 lb/in competition spring for firmer, track-focused handling. It delivers up to 2½" lowering with acme-thread adjustment, an exclusive thrust bearing for easy changes, and strong CNC laser-cut steel construction. Designed to work with UMI Afco, Viking or Koni struts while maintaining factory strut clearance; may not fit all aftermarket K-members.
UMI Performance 82-92 GM F-Body Front Weight Jack System 1050lb Race
