What does 'single adjustable' mean?

These coilovers have one knob that adjusts both rebound and compression damping together. This makes it easy to dial in your preferred ride quality without having to adjust each independently. With 18 settings, you can soften the ride for the street or firm it up for more spirited driving.

Do I need any special tools to install this kit?

This QA1 Pro Coil System is designed as a direct bolt-in replacement for the factory suspension. No welding or cutting is required, making it a straightforward upgrade you can install at home. Refer to the manufacturer's installation instructions for specific tool requirements and torque specifications.

How much can I lower my car with this system?

This system allows you to adjust the ride height from the factory stock height down to 2 inches lower. This is useful for dialing in wheel and tire fitment or achieving a more aggressive stance. Keep in mind that lowering your car can affect alignment, so an alignment is recommended after installation.

QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum

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Specifications

Brand: QA1
Part #: MS401-10450C
UPC: 806990158505

QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum

Name: QA1 64-66 Ford Mustang Pro Front Coil-Over System - Single Adj. - 10in x 450lbs/in - Aluminum
Brand: QA1
Price: 927.44 USD
Availability: InStock

$927.44

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Bolt-in coil-over kit for classic Mustangs. Improves handling and lets you dial in your ride height.

Key Features

Single adjustable — 18 settings let you fine-tune rebound and compression.
Ride height adjustable — Lowers from stock height to 2" lower.
Bolt-in installation — No welding or cutting needed.
10" coil spring — 450 lb./in. rate provides a firmer ride.
Aluminum construction — Lightweight.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Ford Mustang 1964-1966

Product Details

Transform your classic Mustang’s suspension with QA1’s Pro Coil System. Designed for 1964–1966 Mustangs, this single adjustable coilover kit offers modern ride quality, handling, and stance adjustability in an easy bolt-in package. Featuring a 10” coil spring with a 450 lb./in. rate, this system is ideal for drivers who want a firmer ride and enhanced cornering performance without going to a full track setup. MODERN HANDLING & CONTROL Stock suspensions were never built for today’s performance demands. With QA1’s single adjustable coilovers, you can fine-tune rebound and compression together across 18 settings. A single adjustment knob makes it easy to soften the ride for the street or firm it up for more spirited driving. RIDE HEIGHT FLEXIBILITY Get the stance you want without sacrificing drivability. This system allows you to adjust ride height from factory stock height down to 2” lower, perfect for dialing in wheel/tire fitment or achieving a more aggressive look. EASY BOLT-IN INSTALLATION No welding or cutting required. QA1 Pro Coils are designed as direct bolt-in replacements for factory, or QA1 tubular components, making them one of the easiest suspension upgrades you can install at home.