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64-66 Mustang QA 1 Level 2 Full Vehicle Suspension and Handling Kit

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QA1-HK02-FM01

QA1 Level 2 Full Vehicle Handling Kit for 1964–1966 Ford Mustangs, Coil-Over and Suspension Conversion for Front and Rear

Upgrade your classic 1964, 1965, or 1966 Mustang with a modern coil-over suspension system engineered to dramatically improve ride quality, handling, and adjustability over stock. The QA1 Level 2 Full Vehicle Handling Kit is designed for Mustang builders and enthusiasts who want confident street performance, improved cornering, and a refined driving experience—without sacrificing the character of their classic car.

This complete front and rear Coil-Over suspension package replaces outdated factory components with QA1’s proven performance parts, delivering a balanced, tunable setup ideal for street-driven restomods and performance builds. Best of all, the installation of this package is very straightforward, with all the front suspension components designed to be bolt-in. The rear suspension is also straightforward and does not require any cutting or changes to the stock rear structure, just minimal welding on the axle housing and rear frame rails. 

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Description

Key Features & Benefits

Improved Ride Quality Over Stock

QA1’s adjustable coil-over shocks and optimized suspension geometry significantly reduce body roll, brake dive, and harshness commonly found in factory Mustang suspensions. The result is a smoother, more controlled ride on the street with predictable handling at speed.

Fully Matched Front & Rear Suspension System

Unlike piecemeal upgrades, this kit is engineered as a complete system. Each component is designed to work together to improve overall balance, traction, and stability.

Double-Adjustable QA1 Pro Coil Shocks

Independently adjust compression and rebound to fine-tune ride comfort and handling performance. Perfect for dialing in your Mustang for daily driving, spirited cruising, or aggressive street performance.

Adjustable Ride Height & Stance

Set your Mustang’s ride height exactly how you want it. Whether you prefer a subtle drop or a more aggressive stance, the adjustable coil-overs give you full control.

Modern Rear Suspension Performance

The included triangulated 4-link rear suspension improves traction, reduces wheel hop, and delivers more predictable rear-end behavior compared to factory leaf springs.

Built for Mustang Builders

High-quality materials, precision-engineered components, and builder-friendly design make this kit a solid foundation for long-term performance upgrades.

What’s Included

  • QA1 double-adjustable Pro Coil front coil-over shocks w/ 350lb/In Springs (Best for 289/302 Small Block engines)

  • QA1 double-adjustable Pro Coil rear shocks w/ 130lb/In Springs (Best for Street Performance)

  • Tubular front upper and lower control arms

  • Performance Front sway bar

  • Performance Rear sway bar (adjustable End Links)

  • Triangulated 4-link rear suspension system

  • Mounting brackets and hardware

  • Ride height adjustment components

  • All Main Components are Powder Coated Black, as shown in the product pictures

Everything required for a complete handling upgrade in one package.

Vehicle Fitment

  • 1964–1966 Ford Mustang

  • Coupe, Fastback, and Convertible

  • Designed for street performance and restomod applications

Installation Notes

  • Front suspension components are bolt-in using factory mounting locations (no cutting or welding required)

  • The rear 4-link system requires welding at the rear frame rails and on the axle housing for the upper control arm brackets

  • Front Coil-Over System gives you ride height adjustment from STOCK to Lowered by up to 2 inches / Rear Height adjustment is STOCK to Lowered by up to 3 Inches

  • Self-fixturing brackets help ensure proper alignment and geometry

  • Professional installation recommended for best results

Special Notes

Why Mustang Builders Choose This Kit for their 64-66 Mustangs

Precision-Engineered for Classic Chassis

This kit replaces outdated factory springs and stamped control arms with performance-oriented components that dramatically improve suspension geometry and stability — letting your Mustang handle like a modern machine without trading comfort for capability.

Balanced Street Performance

  • Bolt-in front Coil-overs with QA1 Pro Coil shocks and springs: add ride height adjustability, 18-position Compression/Rebound settings that yield responsive handling.

  • Tubular upper & lower control arms: engineered for strength and improved steering precision.

  • Front sway bar: reduces body roll and sharpens turn-in feel.

  • Single-adjustable rear shocks: 18-position compression/rebound settings let you dial in ride firmness for your driving style using standard leaf springs in the rear.

Driver-Focused Adjustability

  • Adjustable front ride height from stock to –2″ gives you stance control plus handling benefits.

  • All necessary hardware, brackets, and bolt-in design means installation is straightforward and doesn’t require cutting or chassis modification.

Perfect For Mustang Enthusiasts Who Want:

✔ Sharper handling without sacrificing street comfort
✔ Better cornering confidence and reduced body roll
✔ Improved suspension geometry with modern components
✔ A direct fit designed for classic Mustang builders.

Key Specifications of Kit

  • Application: 1964–1966 Ford Mustang suspension upgrade

  • Spring/Shock Configuration: Front QA1 Pro Coilovers + rear single-adjustable shocks

  • Spring Rate: ~350 lb/in (front) - Designed for 289/302 SMALL BLOCK Engines (If you have anything different, please contact us)

  • Adjustment: 18 rebound/compression settings on shocks

  • Ride Height Control: Front height adjustable down to –2 Inches Below stock

Frequently Asked Questions (FAQ's)

What’s included in QA1’s Level 1 Full Vehicle Handling Kit for 1964–1966 Mustangs?
The kit includes QA1 single adjustable front coil-overs, tubular upper and lower control arms, a front sway bar, and single-adjustable rear shocks.

What’s the difference between QA1 Level 1 and Level 2 Handling Kits?
Both include QA1 front coil-overs, control arms, and sway bar. The Level 2 handling kit upgrades to double-adjustable shocks and includes QA1’s triangulated rear 4-link coil-over conversion and rear sway bar.

Can I retain my factory front/rear brakes and Rear Axle Housing?
Yes. The Level 1 kit is designed to work with the stock rear axle and most OEM-style brake systems.

How much can I lower my Mustang with this kit?
QA1’s adjustable coil-overs provide front ride height adjustability from stock height down to approximately 2” lower, allowing you to fine-tune stance and performance.

Is this suspension setup comfortable for street use?
Yes. It’s tuned for a balance of comfort and performance, making it ideal for street-driven Mustangs that demand modern ride quality and control.

Details

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Shipping Information

  • Item Requires Shipping
  • 220.0 lbs.
  • $195.00
  • Ships In Multiple Boxes - Flat Oversized Rate Applies

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