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Condition notes recorded before palletizing.
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Suspension
UMI Performance Corner Max Kits 406401-B
€1,691.06
+ freight from €89.00, insured road freight, priced by delivery region
(rates)
From €1,780.06 delivered
- ISPM 15 heat-treated Euro palletized & weatherproof shrink-wrapped
- Insured European road freight delivery with hydraulic tail-lift service
- Dispatches in 1–2 business days from our UK & European Logistics Centre
- Transit typically 1–3 business days (UK) / 3–6 business days (Continental Europe)
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
UMI's Corner Max kit (406401-B) is a front-end-only handling package built around double-adjustable monotube coilovers with 40 clicks of rebound adjustment and 850 lb/in coil springs, aimed at GM muscle cars using stock spindles. The tubular control arms are geometry corrected, working with a bump steer kit to fine-tune steering response, and camber gain is rated at 1.2 degrees per inch with up to 10 degrees of maximum static caster available. A 1 5/16-inch solid front sway bar with swivel end links is included; there is no rear sway bar, trailing arms, or panhard bar in this package since it addresses the front end only.
What's included
- Double-adjustable monotube coilovers and 850 lb/in coil springs
- Geometry-corrected tubular control arms and a bump steer kit
- 1 5/16-inch solid front sway bar with swivel end links
- Spherical bearing and Delrin bushings and mounting hardware
Before you order
This kit is built around stock spindle compatibility, so confirm your GM muscle car still uses stock spindles before ordering rather than a spindle that has already been swapped. Because it only covers the front end, plan separately for any rear suspension work; no rear sway bar, trailing arms, or panhard bar come with this package. Installation is bolt-on with no welding required.
Common questions
Does this kit include rear suspension parts? No, it is a front-end package only.
How many clicks of rebound adjustment do the shocks have? 40.
What spindles does this kit require? Stock spindles.
Specifications
| Feature | Details |
|---|---|
| Brand | UMI Performance |
| MFG. Part # | 406401-B |
| Product Type | Suspension Handling Package |
| Front Coil Springs Included? | Yes, 850 lb./in. Spring Rate |
| Rear Coil Springs Included? | No |
| Shocks Included? | Yes, Double Adjustable Monotube Coilovers (Front) |
| Upper & Lower Control Arms? | Yes, Tubular Design, Geometry-Corrected |
| Front Sway Bar? | Yes, 1 5/16 in. Solid Bar with Swivel End Links |
| Rear Sway Bar? | No |
| Trailing Arms? | No |
| Panhard Bar? | No |
| Bump Steer Kit? | Yes, Fine-Tune Front Suspension Geometry |
| Camber Gain? | 1.2° per inch |
| Max Static Caster? | Up to 10° |
| Shock Adjustability? | 40 Clicks of Rebound Adjustment |
| Bushing Material | Spherical Bearings & Delrin® |
| Mounting Hardware Included? | Yes |
| Installation Type | Bolt-On, No Welding Required |
| Fitment | GM Muscle Cars, Stock Spindle Compatibility |
Suspension Setup & Installation Checklist
- Inspect top mounts, damper seals, bushings, and ball joints prior to fitment.
- Set initial spring preload, collar heights, and damper rebound clicks symmetrically left to right.
- Torque all suspension control arm pivot bolts while the vehicle is at resting ride height (loaded suspension).
- Perform a complete 4-wheel laser alignment once ride height has settled to ensure optimal handling and tire wear.
Full terms: 30-day warranty · returns
