UMI Performance 2075-3-B Rear Coil Spring Lowering Kit with Weight Jack

The UMI Performance 2075-3-B is a complete rear weight jack and coil spring lowering kit designed for 3rd and 4th generation GM F-Body vehicles. This adjustable spring system combines custom-wound premium race-quality coil springs with UMI's unique spring perches featuring smooth-acting Torrington bearing load adjusters, allowing you to fine-tune your ride height and improve handling characteristics for street performance, autocross, and road racing applications.

Key Features:

• Premium USA-Made Springs: Custom wound from premium CrSi (chromium silicon) wire with 200 lb/in spring rate, ideal for corner carving, autocross, and road racing
• Torrington Bearing Load Adjuster: Heavy-duty jack screw and spring pad system enables smooth, easy ride height changes using standard 3/4" socket and ratchet through existing axle hole
• Upper Poly Isolator Included: Dampens road noise and vibration for improved comfort
• Durable Finish Options: Available in tough UMI red or gloss black powder coat finish
• Simple Adjustment: Ride height easily adjusted with normal hand tools—no special equipment required
• 100% Made in USA: Designed, manufactured, and race-tested in Philipsburg, Pennsylvania

Installation Notes: Minor grinding required on left axle pad for proper fitment. Complete instructions included. This kit is compatible with factory rear end housings and Strange Engineering brand rear housings only. Pairs excellently with UMI 2042UDF shock package for optimal suspension performance.

Installation involves removing the standard spring and inserting the weight jack assembly—straightforward installation with included detailed instructions.