Product Description:
2258-1S – 2016-2024 Camaro Coilover Kit, Rear, Viking Shocks, Street
True ride-height and damping adjustability with a street-friendly ride. Complete kit featuring UMI double-shear mounts, Viking Berserker double adjustable shocks, and 400 lb/in springs.
- Street-biased comfort combined with true handling performance
- Double adjustable damping for independent compression and rebound tuning
- Ride-height adjustable for precise stance and corner-weight control
- Robust double-shear mounting replaces weak factory brackets
Quick Overview
Fitment: 2016-2024 Chevrolet Camaro
Primary benefit: Adjustable rear ride-height and traction control tailored for spirited street driving and weekend track days.
Spring Rate:400 lb/in
Shock Valving: Viking Berserker
Adjustment:Double Adjustable
Install Type: Bolt-On
Description
The UMI 2258-1S Rear Coilover Kit is meticulously tailored for 6th Gen Camaro owners who demand true ride-height and damping adjustability without sacrificing their daily commute. By replacing the factory divorced spring setup, this system provides unmatched stance control and handling precision. It features 400 lb/in springs combined with Viking Berserker double adjustable shocks, delivering a firm, performance-oriented ride that dramatically improves rear traction, stability, and squat control under heavy acceleration.
Designed for 2016–2024 Chevrolet Camaro models, the kit anchors to the chassis using UMI’s robust 2258 double-shear upper mounts. The direct bolt-on design utilizes factory lower control arm points and requires zero cutting or welding. Engineered and manufactured in the USA, this dual-purpose street and track package lets you seamlessly tune compression and rebound to perfectly balance your Camaro's handling characteristics for any road condition.
Product Features
- UMI 2258 double-shear upper brackets included
- Viking A472GB Berserker double adjustable shocks
- Independent compression and rebound tuning
- 2.55" I.D. × 14" tall 400 lb/in coilover springs
- Full ride-height and corner-weight adjustability
- Integrates with OEM or aftermarket rear links
- Designed and manufactured in the 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
- Viking Berserker double adjustable shocks: Offers independent tuning of compression and rebound to perfectly balance ride quality, squat control, and handling.
- 400 lb/in coilover springs: The 14-inch tall springs deliver a firm, street-biased balance of comfort and support, ideal for daily commutes and spirited drives.
- Coilover height adjustment: Threaded shock bodies allow precise spring preload and ride-height changes for optimizing your vehicle's stance and corner-weight.
- UMI double-shear upper mounts: Dramatically improves strength over the factory single-shear setup, ensuring a rigid foundation for your coilover assembly.
- Direct bolt-on installation: Attaches to factory locations using the included UMI brackets without the need for chassis cutting or welding.
- Factory lower control arm compatible: Integrates seamlessly with your OEM or performance aftermarket rear suspension links.
Product Outcomes
- Eliminates factory wheel gap with precise ride-height control for the perfect stance.
- Improves rear traction and stability by managing weight transfer and squat during acceleration.
- Delivers a firm but comfortable ride customized to your exact preference via double adjustable damping.
- Increases overall chassis responsiveness for backroad carving and occasional track days.
Installation Summary
Overview & Difficulty: Moderate DIY install requiring floor jacks, jack stands, and basic hand tools; 2–4 hours total. Involves removing wheels, fender liners, factory shocks, and coil springs. Install the UMI upper brackets (torque M10 nuts to 30-35 ft/lbs). Assemble the Viking coilovers with the provided springs and install bushing sleeves (wide in bottom, narrow in top). Mount the coilover top with the 1/2-inch bolt and spacer (torque to 70 ft/lbs), then secure the lower factory bolt. Ensure the coilover body/adjusters are facing up. Magneride-equipped cars require disconnecting the harness.
What’s Included:
- UMI 2258 driver and passenger upper mount brackets
- Viking A472GB Berserker double adjustable rear shocks ×2
- Viking 14DP400 2.55" I.D. × 14" 400 lb/in springs ×2
- Complete Grade 8 upper mounting hardware and spacers
Is This Product Right for You?
The UMI 2258-1S kit is the perfect solution for Camaro owners seeking a dual-purpose suspension upgrade. By combining manageable 400 lb/in springs with highly tunable Viking Berserker valving, this package bridges the gap between daily driver comfort and weekend autocross capability, all while providing the aesthetic benefits of adjustable ride height.
Best For
- Daily-driven Camaros needing adjustable ride height and damping.
- Enthusiasts taking their street car to occasional autocross or track days.
- Owners looking to improve rear traction and eliminate wheel hop.
Not Ideal For
- Dedicated race cars running high-grip tires and high downforce (choose 2258-1R).
- Stock-only restorations not interested in lowering or tuning the suspension.
Product FAQ
Quick answers
What vehicles does the 2258-1S street kit fit?
This kit is a direct fit for the 2016–2024 GM 6th Gen Camaro rear suspension.
What makes the 2258-1S a “street” kit?
The kit uses Viking Berserker double adjustable shocks paired with 400 lb/in springs, providing a firm yet street-friendly balance of comfort and control, unlike stiffer race-oriented setups.
How does the 2258-1S differ from the 2258-1R race kit?
The 1S focuses on dual-purpose street/track use with 400 lb/in springs and Berserker valving. The 1R uses Crusader shocks and 550 lb/in springs designed for dedicated track and competition builds.
Can I adjust rear ride height with this kit?
Yes. The threaded coilover design lets you easily adjust spring preload and ride height to dial in your desired stance and rake.
Will this kit improve traction on my Camaro?
Yes. By allowing independent compression and rebound tuning, you can easily manage squat and weight transfer, significantly improving rear traction.
Is any welding required to install the 2258-1S kit?
No. The UMI brackets and Viking coilovers feature a 100% bolt-on installation using factory mounting points and supplied hardware.
Is the ride harsh with the 400 lb/in springs?
The ride is firmer than stock for performance handling, but ride quality can be easily softened or stiffened using the Berserker adjusters to match your exact comfort preference.
Should I get an alignment after installing this kit?
A full four-wheel alignment is highly recommended whenever ride height or suspension components are changed.
