UMI Performance A224-550S Front Coilover Kit 19-Way Adjustable 550lb Springs

The UMI Performance A224-550S front coilover kit delivers professional-grade suspension tuning with 19-way adjustable compression and rebound damping. This complete kit includes two double-adjustable front coilover shocks paired with hybrid coil springs made in the USA, providing 361 possible damping combinations to optimize performance for street cruising, drag racing, autocross, or road racing.

Key Features:

• 19-way adjustable compression and rebound damping for precise tuning across all driving conditions
• 550lb front spring rate ideal for small block handling applications and all big block engines except drag racing
• Bearing-mounted bottom shock attachment for maximum reliability and performance in high-stress applications
• Adjustable ride height from factory to 3 inches of lowering without requiring spring compressor tools
• Every shock built, dyno-tested, and serialized in Lakeville, Minnesota for quality assurance
• Rebuildable shocks serviceable at Viking or authorized Viking rebuild centers
• Durable protective finish ensures long-lasting appearance

Spring Rate Selection Guide:

• 250lb: Drag race only applications with significant weight reduction
• 350lb: Small block cruise or drag race with lightening modifications
• 450lb: Small block street/cruise, big block drag racing
• 550lb: Small block handling focus, all big block applications except drag racing

What's Included:

• Two front double-adjustable coilover shocks with bearing-mounted lower attachment points
• Two 550lb front coil springs with 11-inch height

Installation Notes:

Optional spanner wrench tool allows ride height adjustment while shocks remain mounted. Optional thrust bearing kit mounts between spring and spring seat for easier adjustments by allowing spring seat rotation on bearings. The coilover adjuster functions as a spring compressor, eliminating the need for separate compression tools. Compatible with factory lower A-arms or UMI lower A-arms, and pairs optimally with UMI geometry-corrected upper A-arms with tall ball joints.

This coilover system provides the adjustability and performance characteristics demanded by serious enthusiasts who need one suspension setup capable of handling multiple driving scenarios from weekend cruising to competitive motorsports.