UMI Performance A205-450T Coilover Adjustable Spring Lowering Kit for 64-70 A-Body/B-Body

The UMI Performance A205-450T coilover kit combines high-quality American-made hybrid coil springs with Viking's 19-way double adjustable shocks, engineered for 1964-1970 A-Body and B-Body Mopar vehicles. This complete front suspension upgrade delivers adjustable ride height from factory to 3" lowering with precise damping control for street, drag racing, autocross, or road course applications.

Kit Includes:

• (2) Viking double adjustable coilover shocks, built and dyno-tested in Lakeville, Minnesota
• (2) Hybrid coil springs with 450 lb/in spring rate (Made in USA)
• Spanner wrench for height adjustment while mounted
• Thrust bearing kit for easier spring seat adjustment
• Polyurethane shock mount bushings

Spring Rate Options by Application:

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

Key Features:

• 19-way adjustable compression and 19-way adjustable rebound (361 total damping combinations)
• Independent compression and rebound adjusters for custom tuning
• No spring compressor required—adjuster acts as compressor during installation
• Brilliant protective finish resists corrosion for years
• Serialized shocks can be rebuilt at Viking or authorized rebuild centers
• Upper coil fits factory spring perch, lower matches coilover shock
• Works with factory lower A-arms or UMI lower A-arms
• Ideal companion to UMI geometry-corrected upper A-arms with tall ball joints

The thrust bearing kit installs between the spring and spring seat, allowing the seat to rotate on a bearing for effortless height adjustments. While not required for installation, it is highly recommended for ease of adjustment. Polyurethane shock mounts provide comfort for mild street applications, while bearing ends (available separately) are recommended for drag racing, autocross, and road racing.

Each shock is individually built, dyno-tested, and serialized to ensure consistent quality and performance. The hybrid spring design provides excellent durability and consistent spring rates across the operating range, making this kit suitable for everything from weekend cruises to competitive motorsports.