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Condition notes recorded before palletizing.
30-Day Startup Warranty
Covers block, heads and internal moving components.
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Auto Parts & Accessories
UMI Performance Stage 2.5 Handling Kits ABF804-1-B
$2,057.06
+ $295.00 flat-rate insured LTL freight
(details)
$2,352.06 delivered to the continental US
- Palletized and heavy shrink-wrapped for freight
- LTL carrier delivery with optional liftgate service
- Ships in 1–2 business days from Los Angeles, CA
- Transit typically 3–7 business days, continental US
Secure checkout by Stripe
Need a matched transmission, controls or wiring package? Speak with a parts specialist.
Details & Inspection Notes
UMI Performance Stage 2.5 Handling Kit, High-Performance Suspension Upgrade!
The UMI Performance Stage 2.5 Handling Kit (ABF804-1-B) is engineered for GM vehicles, blending adjustable coilovers with race-inspired control arms, sway bars, and frame braces. This kit provides exceptional handling, ride quality, and stance adjustability, making it ideal for pro-touring, autocross, or street performance builds.
Designed for GM vehicles with stock GM axle housings, aftermarket axle compatibility is not guaranteed.
Perfect for drivers who want to fine-tune their suspension for aggressive cornering, improved stability, and a smooth ride!
What’s Included in the Kit?
Viking Adjustable Coilovers (Front & Rear)19 Compression & Rebound Settings for complete tuning flexibility
Tubular Lower Front A-Arms with Polyurethane BushingsStronger and lighter than OEM
Upper Front A-Arms with Delrin Bushings & Tall Ball JointsEnhances steering response and suspension geometry
Heavy-Duty Front Sway Bar (1.25” Diameter)Reduces body roll for better cornering stability
Solid Rear Sway Bar (1.00” Diameter)Keeps the rear planted for sharper handling
Tubular Rear Lower Control Arms with Polyurethane BushingsIncreases stability under acceleration & braking
Tubular Rear Upper Control Arms with Polyurethane BushingsReduces wheel hop & improves traction
Tubular Frame Braces with HardwareReinforces chassis rigidity for better response
Replacement Rear End Housing BushingsProvides durability & reduces deflection
UMI Bolt-On Rear Coilover KitAllows full suspension adjustability
Thrust Bearing Kit (x2) & Spanner Wrench KitFor precise suspension tuning & adjustments
Upgrade your GM vehicle’s suspension with race-inspired precision and street-friendly comfort!
Technical Specifications
| Feature | Details |
|---|---|
| Brand | UMI Performance |
| Manufacturer Part # | ABF804-1-B |
| Product Type | Suspension Handling Package |
| Front Coil Springs Included? | Yes |
| Rear Coil Springs Included? | Yes |
| Front Shocks Included? | Yes (Adjustable Coilover) |
| Rear Shocks Included? | Yes (Adjustable Coilover) |
| Ride Height Adjustment? | Yes (Stock to -2”) |
| Front Sway Bar Diameter | 1.250” (31.75mm) |
| Rear Sway Bar Diameter | 1.000” (25.40mm) |
| Upper Control Arms Included? | Yes (Tubular) |
| Lower Control Arms Included? | Yes (Tubular) |
| Bushing Material | Polyurethane & Delrin |
| Subframe Connectors Included? | No |
| Chassis Stiffener Included? | Yes |
| Mounting Hardware Included? | Yes |
| Installation Type | Direct Bolt-On |
| Quantity | Sold as a Kit |
A must-have for GM performance builds looking to enhance steering response, cornering grip, and overall suspension dynamics!
Fitment & Compatibility
Designed for GM Vehicles with Stock GM Axle Housing
Direct Bolt-On Installation, No Modifications Required
Ideal for Pro-Touring, Autocross, Street Performance, & Drag Racing Builds
Provides superior handling benefits while maintaining ride comfort for daily driving!
Installation Notes & Tips
100% Bolt-On Installation, No Welding Required
Adjustable Coilovers Allow Custom Ride Height & Dampening
Ensure Proper Wheel Alignment After Installation
Professional Installation Recommended for Best Results
Rear Coilover Kit Fits GM Axle Housing Only, Aftermarket Axle Fitment Not Guaranteed!
Frequently Asked Questions (FAQ)
How does this kit improve my car’s performance?
- The combination of adjustable coilovers, tubular control arms, and heavy-duty sway bars delivers better cornering grip, reduced body roll, and enhanced ride stability.
Can I install this kit myself?
- Yes! This kit is bolt-on with no welding required, though a professional alignment is recommended post-installation.
Can I adjust the ride height?
- Yes! The Viking coilovers allow height adjustment from stock to 2” lower, letting you customize your car’s stance and handling.
Is this kit compatible with aftermarket axles?
- No guarantee. This kit is designed for GM axle housings, and aftermarket fitment is not guaranteed.
Do I need any additional parts for installation?
- No! The kit includes all necessary components and mounting hardware for a complete suspension upgrade.
Call to Action, Upgrade Your Suspension Today!
Take your GM vehicle’s suspension to the next level with UMI Performance’s Stage 2.5 Handling Kit!
Adjustable Coilovers for Custom Stance & Ride Comfort
Tubular Control Arms for Maximum Stability & Steering Response
Heavy-Duty Sway Bars for Sharper Cornering
Bolt-On Installation, No Welding Required
Order Now & Experience Precision Handling Like Never Before!
OverviewBrand:
UMI Performance
Manufacturer’s Part Number:
ABF804-1-B
Part Type:
Suspension Handling Packages
Product Line:
UMI Performance Stage 2.5 Handling Kits
Summit Racing Part Number:
UPI-ABF804-1-B
Front Coil Springs Included:
Yes
Rear Coil Springs Included:
Yes
Rear Leaf Springs Included:
No
Front Shocks/Struts Included:
Yes
Front Shock Type:
Adjustable coilover
Rear Shocks/Struts Included:
Yes
Rear Shock Type:
Adjustable coilover
Front Sway Bar Included:
Yes
Front Sway Bar Color:
Black
Front Sway Bar Type:
Solid
Front Sway Bar Diameter (in.):
1.250 in.
Front Sway Bar Diameter (mm):
31.75 mm
Rear Sway Bar Included:
Yes
Rear Sway Bar Color:
Black
Rear Sway Bar Type:
Solid
Rear Sway Bar Diameter (in.):
1.000 in.
Rear Sway Bar Diameter (mm):
25.40 mm
Tie Rod Sleeves Included:
No
End Link Bushings Included:
Yes
Rear Leaf Spring Bushings Included:
No
Sway Bar Bushings Included:
Yes
Upper Trailing Arms Included:
Yes
Lower Trailing Arms Included:
Yes
Trailing Arm Mount Braces Included:
Yes
Panhard Bar Included:
No
Torque Arm Included:
No
Upper Control Arms Included:
Yes
Lower Control Arms Included:
Yes
Control Arm Style:
Tubular
Control Arm Material:
Steel
Control Arm Color:
Black
Front Strut Tower Bar Included:
No
K-Member Included:
No
K-Member Support Brace Included:
No
Rear Strut Tower Bar Included:
No
Subframe Connectors Included:
No
Chassis Stiffener Included:
Yes
Calipers Included:
No
Rotors Included:
No
Brake Pads Included:
No
Brake Lines Included:
No
Wheel Studs Included:
No
Center Link Included:
No
Spindles Included:
No
Inner Tie Rod Ends Included:
No
Outer Tie Rod Ends Included:
No
Bushing Material:
Polyurethane
Bushing Color:
Black
Mounting Hardware Included:
Yes
Quantity:
Sold as a kit.
Startup & Installation Checklist
- Replace timing components, water pump and plugs before initial startup where applicable.
- Refill all fluids with manufacturer-specified oil and coolant.
- Verify sensors, ECU pinouts and grounds against your chassis or hull wiring.
- Startup warranty covers heads, block and internal lubricated components for 30 days from delivery.
Full terms: 30-day startup warranty · returns
