UMI Performance A204-550T Viking Front Coilover Kit Double Adjustable Spring Polyurethane - 550lb

The UMI Performance A204-550T is a front Viking coilover kit featuring a 19-position double-adjustable shock paired with a USA-made hybrid coil spring rated at 550 lbs — ideal for small block handling applications and all big block configurations except drag racing. The kit allows ride height adjustment from factory ride height up to a 3-inch drop, with independent compression and rebound adjusters offering 361 possible damping combinations to dial in the perfect setup for street driving, auto-x, or road racing.

Key Features:

• Includes (2) front double-adjustable coilover shocks and (2) front hybrid coil springs — Made in USA
• 19-position independent compression and rebound damping adjustment (361 possible combinations)
• 550 lb spring rate — suited for small block handling and all big block applications except drag racing
• Ride height adjustable from factory height to 3" of lowering
• Bearing-mounted bottom for increased reliability and performance
• Brilliant protective finish for long-lasting appearance
• Every shock is individually built, dyno tested, and serialized in Lakeville, Minnesota
• No coil spring compressor required — the adjuster acts as the compressor
• Compatible with UMI lower a-arms and factory lower a-arms
• Shocks can be rebuilt at Viking or an authorized Viking rebuild center

Spring Rate Options (sold separately by part number suffix):

• 250 lb — 11" tall springs for drag race only; serious weight reduction required
• 350 lb — Small block cruise or drag race with lightening
• 450 lb — Small block cruise or big block drag race
• 550 lb — Small block handling; all big blocks except drag racing

Lower Shock Mount Options:

• Polyurethane (this kit — suffix "T"): Recommended for mild street applications; provides ride comfort and reduced harshness
• Bearing end: Recommended for corner carving, drag racing, auto-x, and road racing for maximum reliability and performance

Optional Accessories (recommended but not included):

• Spanner Wrench: Used to adjust vehicle ride height while the shock remains mounted — required for height adjustments
• Thrust Bearing Kit: Placed between the spring and spring seat to allow smooth, easy height adjustments via rotation; strongly recommended — UMI advises against adjusting without a thrust bearing kit

Viking coilovers are fully compatible with UMI's geometry-corrected upper a-arm with tall ball joint, making this kit an excellent foundation for a complete front suspension upgrade for street, strip, or track.