Weight Jack Kit

The UMI Performance weight jack kit is engineered for 1982-1992 Camaro and Firebird models, offering a medium-firm suspension upgrade suitable for a range of driving conditions from daily commutes to auto-x and road racing. This kit allows for precise tuning of corner weights, a critical aspect for optimal handling and performance. Constructed from strong ¼” thick, CNC laser-cut USA steel, this kit boasts exceptional durability. It features an Acme thread and thrust bearing system for effortless ride height adjustment, allowing for a lowering range of 0 to 2-½ inches. Adjustments are easily made using a standard ratchet and ¾” socket. The kit is compatible with UMI and factory K-members, and the rear kit works with factory and Strange Engineering rear housings. The weight jack kit is available with two spring rate options: 850lb Front / 175lb Rear for daily driving and street cornering, or 1050lb Front / 200lb Rear for more aggressive corner carving, auto-x, and road racing applications. The kit pairs well with UMI, Viking, or Koni struts and shocks, and also works with factory struts and shocks. Note that this kit may not fit other brands of K-members. The product is finished with a durable powder coat for long-lasting protection. Spring options are available in 850/175lb or 1050/200lb configurations.