The UMI Performance A224-350S is a front coilover kit built in collaboration with Viking Performance, pairing a high-quality USA-made hybrid coil spring with a 19-position double adjustable shock absorber. Designed for street cruising, drag racing, and performance driving, this kit delivers up to 3 inches of front ride height drop with full adjustability — no spring compressor required, as the threaded adjuster acts as the compressor.
Each shock is individually built, dyno tested, and serialized at Viking's facility in Lakeville, Minnesota. The 19-way independent compression and rebound damping adjusters provide 361 possible tuning combinations, allowing you to dial in the perfect setup for street, strip, autocross, or road race use. Shocks can be rebuilt at Viking or an authorized Viking rebuild center.
Kit Includes:
- (2) Front coilover shocks — double adjustable
- (2) Front hybrid coil springs — 350 lb/in spring rate (Made in USA)
- Bearing-mount lower shock attachment for increased reliability and performance
- Brilliant protective finish for long-term spring durability
Spring Rate Guide — 350 lb/in:
- 350 lb: Suited for small block cruise or drag race applications with some weight reduction
Full Spring Rate Options Available:
- 250 lb: 11" tall springs for drag race only — serious weight reduction required
- 350 lb: Small block cruise or drag race with weight reduction required
- 450 lb: Small block cruise or big block drag race
- 550 lb: Small block handling, all big block applications except drag
Bearing Mount: This kit features bearing-end lower shock attachment points for improved reliability and performance in demanding applications including corner carving, drag racing, autocross, and road racing. Note: performance suspension components may feel and sound different compared to factory rubber-mounted parts.
Optional Spanner Wrench & Thrust Bearing Kit: The spanner wrench allows ride height adjustment while the shock remains mounted to the vehicle. The optional thrust bearing sits between the spring and spring seat, enabling smooth rotation during height changes. This accessory is recommended for easiest adjustment but is not required for installation.
Viking coilovers are compatible with UMI's lower control arm or your factory lower control arm. For maximum performance, pair with UMI's geometry-corrected upper control arm with tall ball joint for street, strip, or autocross use.