UMI Performance A206-550 Double Adjustable Front Coilover Kit 550lb Spring Rate

The UMI Performance A206-550 is a double adjustable front coilover kit designed as a direct bolt-on replacement for 4th Gen F-body vehicles. Built and dyno tested in Lakeville, Minnesota by Viking, each shock is individually serialized and engineered to deliver tunable performance for drag racing, street driving, autocross, and road course applications.

At the heart of this kit are 19-way independently adjustable compression and rebound damping settings, yielding 361 possible valving combinations. Adjustments are made by hand with no tools required, allowing quick transitions between street, strip, and track setups. Ride height is adjusted via the included spanner wrench with the shock remaining mounted to the vehicle.

Key Features:

• Includes (2) front double adjustable coilover shocks, dyno tested and serialized
• 19-way adjustable compression and rebound — 361 total valving combinations
• Standard 2-1/2" ID lightweight, high-quality Made in USA springs
• 550 lb/in spring rate — optimized for handling, autocross, and corner carving
• Available spring rate options: 275 lb (trailered drag/extreme lightening), 300 lb (general drag), 350 lb (general street), 550 lb (handling/autocross/road course)
• Direct bolt-on installation — no modifications required
• Includes spanner wrench and thrust bearing kit for easier ride height adjustments
• Thrust bearing kit seats between spring and spring seat for smooth, low-friction adjustments
• Shocks can be rebuilt at Viking or an authorized Viking rebuild center
• Sold as a set

The included spanner wrench and thrust bearing kit are highly recommended for ride height adjustments. The thrust bearing allows the spring seat to rotate freely on a bearing surface, making adjustments significantly easier and more precise. UMI does not recommend making height adjustments without the thrust bearing kit installed.