UMI Performance A224-450R Front Coilover Adjustable Lowering Kit with 450lb Springs

The UMI Performance A224-450R is a complete front coilover kit engineered for muscle cars and performance vehicles that demand precision suspension control. This kit combines Viking double-adjustable shocks with hybrid coil springs manufactured in the USA, delivering professional-grade performance for street cruising, drag racing, or road course applications.

Kit Includes:

• (2) Viking front coilover shocks with 19-way adjustable compression and rebound damping
• (2) Hybrid coil springs with 450lb spring rate (11" tall)
• Bearing mounted lower shock mounts for maximum reliability and performance
• Protective finish coating for long-term corrosion resistance

Key Features:

• 19-position independent compression and rebound adjusters provide 361 possible damping combinations
• Adjustable ride height from factory height down to 3" lowered without spring compressor
• Built-in spring perch adjuster eliminates need for separate coil spring compressor during installation
• Each shock dyno tested and serialized at Viking's Lakeville, Minnesota facility
• Rebuildable design serviceable at Viking or authorized rebuild centers
• Upper coil fits factory spring perch while lower coil interfaces with shock body

450lb Spring Rate Application: Ideal for small block engine street cruising and big block drag race applications. This rate provides balanced performance for moderate weight vehicles in mixed-use scenarios.

Additional Spring Rate Options Available:

• 250lb - Drag race only with significant weight reduction
• 350lb - Small block cruise or drag with lightening
• 550lb - Small block handling focus, all big block except drag

Installation Notes: Optional spanner wrench allows ride height adjustment while shocks remain mounted. Optional thrust bearing kit (recommended) installs between spring and spring seat for easier height adjustments by allowing seat rotation on bearings. Works with factory lower control arms or UMI's performance lower a-arms. Pairs ideally with UMI geometry-corrected upper control arms with tall ball joints.

Mounting Configuration: This kit features bearing-mounted lower shock attachment points for maximum performance and reliability in demanding applications including road racing, autocross, and drag racing. Bearing mounts provide superior performance compared to polyurethane in high-load conditions.

Every component is engineered to work together as a complete suspension system, allowing you to custom-tune your vehicle's handling characteristics for any driving situation from weekend cruising to competitive motorsports.