UMI Performance · New
UMI Performance 82-92 GM F-Body Front Weight Jack System 1050lb Race
MPN 2065-3-B · Store SKU umi2065-3-B
Supplier stock checked 11/7/2026, 11:10:24 AM UTC. Adding a part does not reserve it.
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Product details
UMI’s competition 3rd Gen F-Body front weight jack system replaces the factory spring with a tough, adjustable weight jack bucket and a custom wound ultra-premium performance spring. This kit gives up to 2-½” lowering from factory height. The adjustment bucket features an extra thick ¼” base to resist bending under the force of competition. Ultra-smooth ride height adjustment with our acme bolt and industry exclusive thrust bearing system means easier ride height changes at the track. Bending potential is reduced by the thrust bearing system which also helps spread the load over a large surface area. Custom designed 1050 lb/in springs offer a firm ride suitable for auto-x, road race and back road corner carving as well as spirited daily driving (if you don’t mind a firm ride). The 2065-3 kit gives the ride height adjustability of a coilover while still allowing maximum tire clearance around the strut. Works great with the UMI Afco strut, Viking strut or Koni strut. This kit is available in UMI gloss black or red powder coat. 100% manufactured, tested and race proven in the USA. Maintains factory clearance around the strut and allows maximum tire and wheel width. Pairs nicely with UMI Afco, Viking, or Koni strut. Also works with factory strut. Fits UMI K-member and Factory K-member. May not work on other brands. 2065-3 - 1982-1992 GM F-Body Front Weight Jack System, 1050lb, Race Acme thread and thrust bearing for easy ride height adjustment. Adjustment completed easily with ratchet and ¾” socket. Strong ¼” thick construction, CNC laser cut USA steel. Manufactured, tested and race proven in the USA. Allows independent front corner weight tuning. Great choice for competition use. 1050 lb/in premium racing spring. 0 to 2-½” lowering. Anti-rotation tab. Features:
Manufacturer fitment & guides
Check 2065-3-B against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
