UMI Performance 2075-1-B Rear Weight Jack Coil Spring Lowering Kit

The UMI Performance 2075-1-B Rear Weight Jack system provides adjustable ride height control and enhanced handling for 3rd and 4th generation GM F-Body vehicles. This complete kit combines custom-wound premium race quality springs with UMI's innovative spring perches featuring smooth-acting Torrington bearing load adjusters for effortless ride height changes.

Key Features:

• Premium CrSi (Chrome Silicon) wire springs manufactured in the USA for superior strength and durability
• 175 lb/in spring rate optimized for daily driving and spirited street cornering
• Torrington bearing-equipped load adjuster enables smooth, precise ride height adjustments
• Upper polyurethane isolator included to dampen road noise and vibration
• Heavy-duty jack screw and spring pad adjustable with standard 3/4" socket through existing axle hole
• Durable powder coat finish available in UMI red or gloss black
• Simple ride height adjustment using normal hand tools—no special equipment required

Installation Notes: Direct replacement for factory rear springs. Minor grinding required on left axle pad for proper fitment (detailed instructions included). Compatible with factory rear end housing and Strange Engineering brand rear housings only.

Designed, manufactured, and race-tested in Philipsburg, PA. 100% Made in USA.