Rear Coil-Over Converson Kit 200lbs.

The UMI Performance Rear Coil-Over Conversion Kit 200lbs is a double-adjustable suspension system engineered for GM B-Body vehicles from 1978 through 1996. This rear coil-over conversion replaces the factory leaf spring setup with a modern damping platform, delivering independent ride height and dampening adjustment in 1 to 3 inch lowering configurations. The kit includes complete hardware, heavy-duty shocks, progressive rate springs, and all necessary mounting brackets for a plug-and-play installation.

Built for drivers seeking precision suspension tuning, the 200-pound spring rating provides adequate load support for street and weekend track use while maintaining responsive handling characteristics. Double-adjustable dampers allow independent control of compression and rebound settings, enabling fine-tuning across varying road surfaces and driving conditions. The conversion geometry is specifically matched to B-Body chassis dynamics, preserving proper alignment angles and eliminating the binding and harsh ride quality common to aged leaf spring suspensions. At 25.53 lbs per unit, the complete kit maintains a manageable weight profile while delivering the structural rigidity required for sustained performance driving.

This conversion appeals to B-Body restoration enthusiasts, street rod builders, and vintage Chevrolet and Pontiac owners prioritizing modern suspension control without sacrificing authenticity. The kit addresses the limitations of original equipment—poor dampening compliance, ride height loss over time, and unequal load distribution—common to four-decade-old vehicles. Buyers integrating this rear system typically pair it with front coil-over conversions to achieve a fully balanced platform. Installation requires standard automotive tools and moderate mechanical competency; professional installation is recommended for optimal alignment and dampening calibration.