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UMI Performance Stage 5 Handling Kits ABF409-1-B

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Parts & Accessories

UMI Performance Stage 5 Handling Kits ABF409-1-B

SKU 20c70a44ea50

Car Chassis & Suspension Kits

$2,724.05

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No warranty

Commercial use may carry a shorter period than pleasure use.

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Freight — oversize — from $349. Ships in 1–3 business days, 3–10 business days in transit.

Freight damage must be noted on the delivery receipt and reported within 48 hours of delivery.

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30-day return window · 25% restocking fee plus freight both ways.

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Specification

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Part number
20c70a44ea50
Department
Parts & Accessories
Category
Car Chassis & Suspension Kits

In the seller's words

Description

UMI Performance Stage 5 Handling Kit – Pro-Touring Suspension for A-Body Muscle Cars!

The UMI Performance Stage 5 Handling Kit (ABF409-1-B) is the ultimate pro-touring suspension upgrade for classic A-body muscle cars. Designed with track-ready geometry, this complete bolt-on suspension system enhances cornering, stability, and overall driving dynamics.

This kit features Viking double-adjustable coilovers, tubular control arms, and solid sway bars, giving you total control over ride height, compression, and rebound damping. Designed for Pontiac, Oldsmobile, Chevrolet, Buick, and GMC A-body models from the 1960s and ’70s, this system is engineered for aggressive street performance and road course handling.

Perfect for classic muscle car owners looking to dominate the road and track!

What’s Included in the Kit?

✅ Viking Front & Rear Coilover Shocks – Double adjustable for ride height, compression & rebound tuning
✅ Adjustable Upper & Lower Tubular Control Arms – Taller ball joints for better camber curves & reduced bump steer
✅ Solid 1.25” Front Sway Bar & 1.00” Adjustable Rear Sway Bar – Reduces body roll & improves handling
✅ Delrin® & Spherical Bearing Bushings – Delivers precision steering & smooth articulation
✅ Chassis Stiffener Bracing – Enhances frame rigidity for improved handling
✅ All Necessary Mounting Hardware – Everything needed for installation

Designed for aggressive driving, pro-touring builds, and high-performance muscle cars!

Technical Specifications

Feature Details
Brand UMI Performance
Manufacturer Part # ABF409-1-B
Product Type Suspension Handling Package
Front Coil Springs Included? ✅ Yes
Rear Coil Springs Included? ✅ Yes
Rear Leaf Springs Included? ❌ No
Front Shocks Included? ✅ Yes (Double Adjustable Twin-Tube)
Rear Shocks Included? ✅ Yes (Double Adjustable Twin-Tube)
Front Sway Bar Included? ✅ Yes (1.25” Solid)
Rear Sway Bar Included? ✅ Yes (1.00” Solid, Adjustable)
Upper Control Arms Included? ✅ Yes (Tubular Steel)
Lower Control Arms Included? ✅ Yes (Tubular Steel)
Trailing Arms Included? ✅ Yes (Upper & Lower)
Control Arm Material Steel
Control Arm Color Black
Bushing Material Spherical Bearing/Delrin®
Chassis Stiffener Included? ✅ Yes
Mounting Hardware Included? ✅ Yes
Spindles Included? ❌ No
Brake Components Included? ❌ No
Quantity Sold as a kit

⚡ Designed for aggressive cornering, improved suspension geometry, and superior handling!

Fitment & Compatibility

✔ Compatible with Classic A-Body Muscle Cars
✔ Designed for Pontiac, Oldsmobile, Chevrolet, Buick & GMC Models (1960s-70s)
✔ Ideal for Pro-Touring, Autocross, and Performance Street Builds

Perfect for muscle car enthusiasts looking to modernize their suspension for high-performance driving!

Installation Notes & Tips

100% Bolt-On Installation – No Cutting or Welding Required
⚙️ Front & Rear Coilovers Allow Ride Height & Dampening Adjustments
Professional Alignment Recommended After Installation
Use Spanner Wrenches for Coilover Ride Height Adjustment

⚠️ Ensure correct caster & camber settings for optimal handling performance!

❓ Frequently Asked Questions (FAQ)

What makes this suspension kit different from stock A-body suspension?

  • This kit completely overhauls your classic muscle car’s suspension by introducing tubular control arms, adjustable coilovers, and race-inspired geometry for modern handling and performance.

Can I adjust ride height with this kit?

  • Yes! Viking coilovers allow full ride height, compression, and rebound tuning, giving you total control over stance and handling.

Will this kit fit my classic Chevrolet Chevelle, Pontiac GTO, or Oldsmobile Cutlass?

  • Yes! This kit is designed to fit a wide range of 1960s-70s GM A-body vehicles, including Chevrolet, Pontiac, Oldsmobile, Buick, and GMC models.

Do I need additional parts for installation?

  • No. This kit includes all necessary suspension components and mounting hardware. However, spindles, brake components, and additional chassis stiffening parts can further enhance performance.

Is this kit suitable for daily driving?

  • Yes! While optimized for performance driving, this kit maintains excellent street manners, making it a great choice for both street and track use.

Call to Action – Upgrade Your Classic A-Body with Pro-Touring Suspension Today!

Turn your classic A-body into a high-performance handling machine with the UMI Performance Stage 5 Handling Kit!

✔ Double-Adjustable Viking Coilovers for Custom Ride Control
✔ Tubular Control Arms with Taller Ball Joints for Improved Geometry
✔ Solid Front & Adjustable Rear Sway Bars for Cornering Stability
✔ Delrin® Bushings for Precision Steering & Suspension Articulation

Order Now & Experience the Ultimate Handling Upgrade for Your Muscle Car!

Overview

Brand:
UMI Performance
Manufacturer’s Part Number:
ABF409-1-B
Part Type:
Suspension Handling Packages
Product Line:
UMI Performance Stage 5 Handling Kits
Summit Racing Part Number:
UPI-ABF409-1-B
Front Coil Springs Included:
Yes
Rear Coil Springs Included:
Yes
Rear Leaf Springs Included:
No
Front Shocks/Struts Included:
Yes
Front Shock Type:
Double adjustable twin-tube
Rear Shocks/Struts Included:
Yes
Rear Shock Type:
Double adjustable twin-tube
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:
No
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:
Spherical bearing/Delrin®
Bushing Color:
Black
Mounting Hardware Included:
Yes
Quantity:
Sold as a kit.
Notes:
450 lbs./in. front springs. Rear sway bar is adjustable.

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