UMI Performance A226-450 Double Adjustable Front Coilover Kit with Viking Shocks

The UMI Performance A226-450 is a complete front coilover kit designed as a direct bolt-on upgrade for 4th Gen F-Body vehicles. Built in partnership with Viking Performance, this kit delivers full ride height adjustability along with independently tunable compression and rebound damping — all in one integrated package.

Viking Double-Adjustable Shocks:

• Includes (2) double-adjustable front coilover shocks
• 19-way independent compression and rebound adjustment — 361 total valving combinations
• Every shock is individually built, dyno tested, and serialized at Viking's facility in Lakeville, Minnesota
• Shocks are fully rebuildable at Viking or an authorized Viking rebuild center
• Damping adjustments require no tools — simply click adjusters by hand to tune for street, strip, auto-x, or road race

Lightweight USA-Made Springs:

• Includes (2) front coilover springs in your choice of spring rate
• Standard 2-1/2" I.D. coilover spring diameter with wide rate availability
• Springs are lightweight, high-quality, and Made in the USA
• Spring rate options and recommended applications:
  • 275 lb/in — Trailered drag car; extreme weight reduction required
  • 300 lb/in — General drag racing use
  • 350 lb/in — General street driving
  • 550 lb/in — Autocross, handling, and corner carving

Included: Spanner Wrench & Thrust Bearing Kit

• Spanner wrench allows ride height adjustment while the shock remains mounted on the vehicle
• Thrust bearing kit seats between the spring and spring seat, allowing the seat to rotate on a bearing for significantly easier height adjustments
• Both the spanner wrench and thrust bearing kit are included and highly recommended — height adjustment without the thrust bearing kit is not advised
• Ride height adjustment takes only a few minutes per side

Additional Features:

• Direct bolt-on installation — no cutting or fabrication required
• Sold as a complete front set
• Dramatically improves performance for drag racing, street driving, autocross, and road course applications