UMI Performance A207-450T Front Coilover Adjustable Spring Lowering Kit 450lb

The UMI Performance A207-450T is a front coilover kit that pairs a high-quality hybrid coil spring with a Viking 19-way double adjustable shock for a versatile, performance-ready suspension upgrade. Built and dyno tested in Lakeville, Minnesota, every shock is serialized and ready for street, drag, auto-x, or road race use — all in one package.

Key Features:

• Includes (2) front coilover shocks — double adjustable compression and rebound damping
• 19-way independent compression and rebound adjusters yielding 361 possible damping combinations
• Includes (2) hybrid coil springs at 450 lb/in spring rate — suited for small block engine applications
• Spring rate options available: 250, 350, 450 (this kit), or 550 lb/in (550 lb recommended for big block vehicles)
• Made in the USA — every shock is built, dyno tested, and serialized in Lakeville, Minnesota
• Brilliant protective finish keeps springs looking great for years
• No coil spring compressor required — the adjuster acts as the compressor for safe, easy installation
• Adjustable ride height from factory height to 3 inches of lowering
• Compatible with UMI lower a-arms or factory lower a-arms
• Shocks are rebuildable at Viking or an authorized Viking rebuild center

Mounting Options:

• Polyurethane shock mount — ideal for mild street applications; provides ride comfort and reduced harshness
• Bearing end option — recommended for corner carving, drag racing, auto-x, and road race applications for increased reliability and performance

Optional Accessories (sold separately):

• Spanner Wrench: Allows ride height adjustment while the shock remains mounted to the vehicle
• Thrust Bearing Kit: Placed between the spring and spring seat to allow smooth, easy height adjustments by rotating on a bearing — highly recommended but not required for installation

The upper coil spring fits the factory upper spring perch while the lower section interfaces with the coilover shock body. Pairs seamlessly with UMI's geometry-corrected upper a-arm with tall ball joint for a complete front suspension overhaul. Note: By their nature, performance bushings (poly or bearing) may feel and sound different from factory rubber-mounted components. UMI is not responsible for poly bushing damage resulting from performance applications.