64-66 Mustang QA1 Front Pro Coil-Over Shock Kit, Single Adjustable, 450lb Springs
QA1 Pro Coil-Over Front Suspension System for 1964-66 Ford Mustang, Single Adjustable, 450lb. Springs (Small Block Engines)
Transform the front-end performance of your 1964–1966 Ford Mustang with the QA1 Pro Coilover Suspension System—a modern, bolt-in upgrade designed for aggressive street driving, pro-touring builds, and restomods. This system delivers improved handling, precise ride control, and adjustable stance without cutting or welding your classic Mustang.
Featuring QA1’s firmest single-adjustable setup, this kit includes 10” coil springs with a 450 lb./in. spring rate, providing flatter cornering, reduced body roll, and sharper steering response compared to factory suspension components. This coil-over shock and spring kit will install using your stock upper control arms or the upgraded QA1 Tubular Upper Control Arms (recommended).
Sold as KIT
Description
MODERN HANDLING WITH SIMPLE ADJUSTABILITY
QA1’s single-adjustable coilover shocks allow you to tune both rebound and compression simultaneously using a single adjustment knob. With 18 levels of adjustment, it’s easy to dial in a comfortable street ride or tighten things up for maximum cornering performance—all in seconds.
ADJUSTABLE RIDE HEIGHT & STANCE
This front coilover system lets you fine-tune ride height from factory stock down to 2 inches lower, giving you full control over stance, suspension geometry, and wheel/tire clearance. Perfect for Mustangs running larger wheels or seeking a more aggressive, planted look.
TRUE BOLT-IN INSTALLATION
Designed specifically for 1967–1973 Mustangs, this QA1 Pro Coil System installs with no cutting, drilling, or welding required. It bolts directly into the factory mounting locations, making it a garage-friendly upgrade with professional-level results.
FEATURES & BENEFITS
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Direct-fit front coilover system for 1964–1966 Ford Mustangs
-
Single-adjustable shocks with 18 rebound/compression settings
-
Includes 10” 450 lb./in. coil springs (firm street performance rate)
-
Ride height adjustable from stock to –2 inches
-
Improves handling, reduces body roll, and enhances steering feel
-
Durable powder-coated springs with premium QA1 hardware
-
Compatible with factory control arms or QA1 tubular control arms & sway bars
-
No welding or fabrication required
-
Sold as a pair (front)
FITMENT NOTES
-
Fits 1964–1966 Ford Mustang
-
Front suspension application
-
Works with factory or QA1 tubular control arms
-
Includes single-adjustable shocks and 10” 450 lb./in. springs
-
Bolt-in installation
-
Ride height adjustable: stock to –2”
-
Sold as a pair
RECOMMENDED FRONT SPRING RATE GUIDE
| Year | Model | Small Block | Big Block |
|---|---|---|---|
| 1964–1966 | Mustang | 350 lb/in | 450 lb/in |
| 1964–1966 | Mustang | 400 lb/in | 500 lb/in |
(This kit includes 450 lb/in springs)
SPECIFICATIONS
-
Spring Rate: 450 lb/in
-
Springs Included: Yes
-
Shock Valving: Single Adjustable
-
Vehicle Position: Front
Special Notes
MODERN HANDLING WITH SIMPLE ADJUSTABILITY
QA1’s single-adjustable coilover shocks allow you to tune both rebound and compression simultaneously using a single adjustment knob. With 18 levels of adjustment, it’s easy to dial in a comfortable street ride or tighten things up for maximum cornering performance—all in seconds.
ADJUSTABLE RIDE HEIGHT & STANCE
This front coilover system lets you fine-tune ride height from factory stock down to 2 inches lower, giving you full control over stance, suspension geometry, and wheel/tire clearance. Perfect for Mustangs running larger wheels or seeking a more aggressive, planted look.
TRUE BOLT-IN INSTALLATION
Designed specifically for 1964–1966 Mustangs, this QA1 Pro Coil System installs with no cutting, drilling, or welding required. It bolts directly into the factory mounting locations, making it a garage-friendly upgrade with professional-level results.
FEATURES & BENEFITS
-
Direct-fit front coilover system for 1964–1966 Ford Mustangs
-
Single-adjustable shocks with 18 rebound/compression settings
-
Includes 10” 450 lb./in. coil springs (firm street performance rate)
-
Ride height adjustable from stock to –2 inches
-
Improves handling, reduces body roll, and enhances steering feel
-
Durable powder-coated springs with premium QA1 hardware
-
Compatible with factory control arms or QA1 tubular control arms & sway bars
-
No welding or fabrication required
-
Sold as a pair (front)
FITMENT NOTES
-
Fits 1964–1966 Ford Mustang
-
Front suspension application
-
Works with factory or QA1 tubular control arms
-
Includes single-adjustable shocks and 10” 450 lb./in. springs
-
Bolt-in installation
-
Ride height adjustable: stock to –2”
-
Sold as a pair
RECOMMENDED FRONT SPRING RATE GUIDE
| Year | Model | Small Block | Big Block |
|---|---|---|---|
| 1964–1966 | Mustang | 350 lb/in | 450 lb/in |
| 1967–1973 | Mustang | 400 lb/in | 500 lb/in |
(This kit includes 450 lb/in springs)
SPECIFICATIONS
-
Spring Rate: 450 lb/in
-
Springs Included: Yes
-
Shock Valving: Single Adjustable
-
Vehicle Position: Front
Frequently Asked Questions (FAQS)
What spring rate is included with the QA1 MS402-10450C coilover kit?
This kit comes equipped with 10-inch front coil springs rated at 450 lb./in., offering a firmer setup for improved handling and reduced body roll.
How much ride height adjustment is available on a 1964–1966 Mustang?
QA1 Pro Coilovers allow you to adjust ride height from factory stock down to approximately 2 inches lower, letting you fine-tune stance, suspension geometry, and wheel clearance.
How do QA1 single-adjustable coilovers function?
Single-adjustable shocks use one adjustment knob to control rebound and compression together. With 18 adjustment settings, you can quickly tailor the ride from comfortable cruising to performance-focused handling.
Does the QA1 coilover system require cutting or fabrication?
No modifications are necessary. The MS402-10450C is designed as a true bolt-in system and installs using basic hand tools—no welding, drilling, or cutting required.
Is a 450 lb./in. spring rate suitable for street use?
The 450 lb./in. springs are firmer than the 400 lb./in. option and are ideal for aggressive street driving and restomod builds. They work especially well on small block cars and feel slightly softer when used on big block Mustangs.
What suspension upgrades work best with QA1 Pro Coilovers?
For maximum performance and proper suspension geometry, QA1 Pro Coils pair exceptionally well with QA1 tubular control arms and sway bars. These components are available for 1964–1966 Mustangs and complete a balanced front suspension system.
Details
- QA1-MS401-10450C
- QA1-MS401-10450C
- QA1 Suspension
- New
Shipping Information
- Item Requires Shipping
- FREE SHIPPING on orders *$199 or more
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