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UMI Performance Stage 3.5 Handling Kits GBF035-2-B

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Parts & Accessories

UMI Performance Stage 3.5 Handling Kits GBF035-2-B

SKU ddbac46e45ce

Car Chassis & Suspension Kits

$2,126.51

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Warranty

No warranty

Commercial use may carry a shorter period than pleasure use.

Warranty terms
Freight

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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Returns

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

Engines or transmissions that have been disassembled or parted out cannot be returned.

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Some engines and transmissions carry a refundable core charge, shown on the product page where it applies.

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Catalogue data

Specification

3 fields

Part number
ddbac46e45ce
Department
Parts & Accessories
Category
Car Chassis & Suspension Kits

In the seller's words

Description

UMI Performance Stage 3.5 Handling Kit – Ultimate Pro-Touring Upgrade!

The UMI Performance Stage 3.5 Handling Kit is designed for enthusiasts who want a pro-touring-inspired suspension system that delivers track-level performance without sacrificing street comfort. The package eliminates body roll, improves steering response, and enhances overall vehicle stability for spirited backroad driving, auto-crossing, or track days.

Perfect for aggressive street builds, weekend warriors, and autocross competitors!

What’s Included in the Kit?

✅ Tubular Lower Front A-Arms – Equipped with Delrin® bushings for reduced deflection and enhanced control
✅ Tubular Upper Front A-Arms – Features Delrin® bushings and ½” taller ball joints for optimized geometry
✅ Heavy-Duty 1.25” Front Sway Bar – Helps eliminate body roll and sharpen steering response
✅ Adjustable 1” Pro-Touring Rear Sway Bar – Allows fine-tuning of handling characteristics
✅ 1” Lowering Springs (Linear Spring Rate) – Improves stance and lowers center of gravity for better grip
✅ Tubular Rear Lower Control Arms – Features roto-joints for maximum articulation and durability
✅ Adjustable Rear Upper Control Arms – Enhances traction and pinion angle tuning
✅ Tubular Frame Braces – Strengthens chassis rigidity for improved cornering and straight-line stability
✅ Replacement Rear-End Housing Bushings – Eliminates excess movement for a tighter feel
✅ Front Upper & Lower Grade 8 Hardware Kit – Ensures a secure and high-strength installation
✅ Rear Control Arm Grade 8 Hardware Kit – Provides durability under aggressive driving conditions
✅ 4 RideTech HQ Shocks – Delivers rebound adjustment for fine-tuned ride quality

A complete package engineered for aggressive handling and control!

Technical Specifications

Feature Details
MFG. Part # GBF035-2-B
Brand UMI Performance
Suspension Type Handling Package
Front Coil Springs Included Yes (1” Lowering)
Rear Coil Springs Included Yes (1” Lowering)
Front Shocks Included Yes (RideTech HQ Adjustable)
Rear Shocks Included Yes (RideTech HQ Adjustable)
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)
Control Arm Color Black Powdercoated
Chassis Stiffener Included Yes (Frame Braces)
Bushing Material Delrin®
Bushing Color Black
Mounting Hardware Included Yes (Grade 8)
Brake Components Included No
Quantity Sold as a Kit

Designed to deliver precision handling, chassis rigidity, and race-proven performance!

Fitment & Compatibility

✔ Ideal for GM A-Body Muscle Cars Looking for a Performance Suspension Upgrade
✔ Direct Bolt-On Fitment – No Major Modifications Required
✔ Perfect for Street, AutoX, & Track Applications
✔ Works with Factory & Aftermarket Wheels

Brings modern handling technology to classic muscle cars!

Installation Notes & Tips

No Major Modifications Required – Direct Bolt-On Fitment
Professional Installation Recommended for Best Performance & Alignment
Ensure Proper Wheel Alignment After Installation
Check for Wheel Clearance When Using Lowering Springs & Sway Bars

Upgrade your suspension and experience precise handling like never before!

❓ Frequently Asked Questions (FAQ)

How does the UMI Performance Stage 3.5 Kit improve my vehicle’s handling?

  • The combination of RideTech adjustable shocks, tubular control arms, and sway bars enhances steering precision, eliminates body roll, and improves high-speed stability.

Will this kit work with my factory steering components?

  • Yes! This kit is fully compatible with OEM or aftermarket steering setups.

Does this kit lower my car?

  • Yes! It features 1” lowering springs, improving stance and lowering the center of gravity for better cornering.

Is professional installation required?

  • While this kit is bolt-on, professional installation is recommended for proper alignment and suspension tuning.

Can I use this kit for track racing?

  • Absolutely! It’s designed for street, autocross, and pro-touring applications.

Call to Action – Upgrade Your Suspension Today!

UMI Performance Stage 3.5 Handling Kit – The Ultimate A-Body Handling Upgrade!

✔ Tubular Control Arms & Frame Braces for Rigidity
✔ RideTech Adjustable Shocks for Performance Tuning
✔ 1” Lowering Springs for a Sporty Stance & Improved Handling
✔ Adjustable Rear Sway Bar for Optimized Traction
✔ Direct Bolt-On Installation – No Guesswork, Just Performance!

Order Now & Transform Your Classic Muscle Car into a Modern Handling Machine!

Overview

Brand:
UMI Performance
Manufacturer’s Part Number:
GBF035-2-B
Part Type:
Suspension Handling Packages
Product Line:
UMI Performance Stage 3.5 Handling Kits
Summit Racing Part Number:
UPI-GBF035-2-B
Front Coil Springs Included:
Yes
Rear Coil Springs Included:
Yes
Rear Leaf Springs Included:
No
Front Shocks/Struts Included:
Yes
Front Shock Type:
Non-adjustable
Rear Shocks/Struts Included:
Yes
Rear Shock Type:
Non-adjustable
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:
Delrin®
Bushing Color:
Black
Mounting Hardware Included:
Yes
Quantity:
Sold as a kit.
Notes:
Rear sway bar is adjustable.

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