UMI Performance A224-550R Front Coilover Adjustable Shock Kit with 550lb Springs

The UMI Performance A224-550R is a complete front coilover kit that combines Viking's 19-way double adjustable shocks with high-quality hybrid coil springs made in the USA. This kit provides precise control over ride height and damping characteristics, making it ideal for street performance, autocross, road racing, and drag racing applications.

Key Features:

• Pair of Viking double adjustable coilover shocks with 19-position compression and rebound damping (361 possible combinations)
• 550lb spring rate included - optimized for small block handling applications and all big block applications except drag racing
• Bearing mounted lower attachment points for maximum reliability and performance
• Adjustable ride height from factory to 3 inches of lowering without requiring a separate spring compressor
• Built-in adjuster acts as spring compressor for simplified installation
• Every shock is dyno tested and serialized in Lakeville, Minnesota
• Protective finish ensures long-lasting appearance
• Shocks can be rebuilt at Viking or authorized rebuild centers
• Works with factory lower A-arms or UMI performance lower A-arms

Spring Rate Options: This kit includes 550lb springs, but UMI offers alternative spring rates (250lb, 350lb, 450lb) to suit different applications from drag racing to handling-focused builds. The 550lb rate provides excellent handling characteristics for small block engines and is suitable for all big block applications except dedicated drag racing.

Optional Components: Spanner wrench and thrust bearing kits are available separately to simplify ride height adjustments while the shocks remain mounted. The thrust bearing reduces friction between the spring and spring seat for easier tuning.

This coilover system pairs perfectly with UMI's geometry-corrected upper A-arms for a complete front suspension upgrade that delivers superior performance on the street, track, or strip.