UMI Performance A204-450S Coilover Adjustable Spring Lowering Kit with Double Adjustable Shocks

The UMI Performance A204-450S Coilover Kit delivers professional-grade suspension tuning with Viking double-adjustable shocks and USA-made hybrid coil springs. Designed for GM A-Body platforms, this complete front coilover system provides adjustable ride height from factory to 3 inches of lowering, with 19-way adjustable compression and rebound damping for precise handling control.

Key Features:

• 19-position double adjustable shocks with independent compression and rebound controls (361 possible combinations)
• Bearing-mounted lower shock mounts for maximum reliability and performance
• Hybrid coil springs manufactured in the USA with protective finish
• Adjustable ride height from stock to 3 inches lowered without removing shocks
• Each shock dyno tested and serialized in Lakeville, Minnesota
• Rebuildable shocks serviceable at Viking or authorized centers
• No spring compressor required—adjuster acts as compressor

Spring Rate Options (450lb included):

• 250lb (11" tall): Drag race only with serious weight reduction
• 350lb: Small block street/cruise or drag race with lightening
• 450lb: Small block street/cruise, big block drag race
• 550lb: Small block handling, all big blocks except drag applications

What's Included:

• (2) Front coilover shocks with double adjustable damping
• (2) Hybrid coil springs with 450lb rate
• Bearing-mounted lower shock mounts

Recommended Accessories:

• Spanner wrench for adjusting ride height while shocks remain installed
• Thrust bearing kit for easier spring seat adjustments

This coilover system works with factory lower A-arms or UMI's performance lower A-arms, and pairs perfectly with UMI's geometry-corrected upper A-arms for optimized suspension geometry. Ideal for street performance, drag racing, autocross, and road racing applications.