Product Description:
2258 – 2016-2024 Camaro Coilover Mount Kit, Upper, Rear
Convert your 6th Gen Camaro to a true coilover rear suspension. Double-shear, laser-cut brackets that adapt Viking, Penske, and Koni dampers without cutting or welding.
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Double-shear strength replaces the factory single-shear setup
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Floating sleeve system easily adapts multiple shock brands
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No cutting or welding — 100% bolt-on factory location fitment
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Race-proven durability manufactured completely in the USA
Quick Overview
Fitment: 2016-2024 Chevrolet Camaro
Primary benefit: High-performance foundation for converting your rear suspension to true aftermarket coilovers.
Install Difficulty: Moderate DIY
Install Time: 2–4 hrs
Mount Style: Double-Shear
Compatibility: Viking / Penske / Koni
Description
UMI's 2258 Rear Upper Coilover Mounts are the high-performance foundation you need to convert your 6th Gen Camaro to a true coilover rear suspension. By replacing the factory single-shear upper shock mount with a robust, laser-cut double-shear bracket, these mounts provide unmatched strength and rigidity. The race-inspired floating sleeve system ensures proper hardware alignment, delivering precise handling and reliable performance under extreme cornering loads.
Designed as a direct bolt-in upgrade for 2016–2024 Camaro models, the 2258 kit requires no chassis cutting or welding. It easily accommodates popular aftermarket coilover dampers, including Viking, Penske, and Koni. Proudly engineered, race-tested, and manufactured 100% in the USA, this kit includes everything needed to create a solid rear suspension setup for the street, strip, or road course.
Product Features
- Direct bolt-in replacement for factory mounts
- Dramatically improved double-shear strength
- Floating sleeve adapts popular shock brands
- No cutting or welding required
- Laser-cut precision steel construction
- Race-proven performance and rigidity
- 100% Made in USA
⚠ Fitment Note: A MagneRide delete module is required when using Viking, Penske, or other aftermarket shocks when installed on vehicles equipped with factory MagneRide struts. This module bypasses the MagneRide system and eliminates error codes on the dash.
Detailed Features
- Double-shear upper mount: Dramatically improves strength and rigidity versus the OE single-shear configuration, preventing flex under heavy suspension loads.
- Floating sleeve system: Accommodates all popular shock brands, including Viking, Penske, and Koni, for hassle-free damper upgrades.
- Direct bolt-in design: Replaces the factory upper rear shock mount using existing chassis holes, meaning no cutting or welding is required.
- Laser-cut precision: Ensures exact fitment and alignment, making installation smooth and repeatable for DIY builders.
- Race-proven strength: Track-tested to handle the rigorous demands of competitive road racing, autocross, and drag racing.
- Premium hardware included: Features high-quality Grade 8 bolts, M10 flange nuts, and anodized aluminum spacers for a complete installation.
Product Outcomes
- Provides a rock-solid foundation for high-performance coilover dampers.
- Eliminates upper mount deflection for more consistent damping and handling.
- Enables a true coilover conversion without permanently modifying the chassis.
- Opens the door to endless spring rate and ride-height tuning options.
Installation Summary
Overview & Difficulty: Moderate DIY install requiring basic tools, jack stands, and a floor jack; approximately 2–4 hours. Process involves removing rear wheels, fender liners, factory shocks, and coil springs. Bolt the UMI brackets into the factory location (torque M10 nuts to 30-35 ft/lbs), assemble coilovers, and mount the top with the provided 1/2-inch bolt and spacer (torque to 70 ft/lbs). Reattach the lower shock mount. Magneride-equipped vehicles will require disconnecting the factory wiring harness.
What’s Included:
- Driver side upper coilover mount bracket (2258DR) ×1
- Passenger side upper coilover mount bracket (2258PA) ×1
- 1/2-13 × 3" Grade 8 bolts, nyloc nuts, and SAE washers
- M10 × 1.50 flange nuts
- Anodized black aluminum spacers (2655L, 2655K)
- Poly bushing spacer/sleeves (2258F, 2258G)
Is This Product Right for You?
The UMI 2258 upper mounts are the critical missing link for 6th Gen Camaro owners looking to ditch the factory divorced spring setup in favor of true coilovers. By providing a rigid double-shear mounting point, these brackets allow enthusiasts to safely run Viking, Penske, or Koni coilover systems to achieve perfect ride height and precise corner-weighting.
Best For
- Camaro builders converting to a true rear coilover suspension.
- Track and autocross enthusiasts needing double-shear mounting strength.
- Drivers who already own Viking, Penske, or Koni aftermarket dampers.
Not Ideal For
- Owners looking for a complete kit with shocks and springs included (see 2258-1S or 2258-1R).
- Daily drivers wanting to retain the stock factory shock and spring configuration.
Product FAQ
Quick answers
What vehicles do the UMI 2258 brackets fit?
The UMI 2258 brackets are designed as a direct fit for the 2016–2024 6th Gen Camaro rear suspension.
What is the advantage of a double-shear mount?
A double-shear upper mount captures the shock bearing on both sides, dramatically improving strength, rigidity, and safety over the factory single-shear design.
Do I need to cut or weld my chassis to install these?
No. The brackets feature a bolt-on installation using existing factory locations, completely eliminating the need for permanent chassis modifications.
Which coilover brands work with these brackets?
The race-inspired floating sleeve system is compatible with Viking, Penske, Koni, and other popular aftermarket coilover dampers.
What hardware is included with the UMI 2258 kit?
The kit includes Grade 8 bolts, M10 flange nuts, anodized black aluminum spacers, and bushing sleeves required for a clean install.
Does this work on Magneride-equipped Camaros?
Yes, but you must disconnect the Magneride wiring harness and will likely need an aftermarket delete kit to prevent dashboard error codes when switching to standard coilovers.
Does this kit include the shocks and springs?
No. This part number is for the upper mount brackets and hardware only. For complete systems, look at the UMI 2258-1S or 2258-1R kits.
Where are the UMI 2258 mounts manufactured?
All UMI Performance brackets are laser-cut, welded, and 100% Made in the USA at our Pennsylvania facility.
