MS401-10350C Front Pro Coil Shock System, Single Adjustable, Ford, 10in. Spring, 350lb./in.

MS401-10350C Front Pro Coil Shock System, Single Adjustable, Ford, 10in. Spring, 350lb./in.

QA1

SKU
MS401-10350C
$854.95
Estimated Shipping Date: Jun 18, 2026
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Installation Guide
California Prop 65
Emissions Code 4

Upgrade your classic Mustang’s front suspension with QA1’s Pro Coil System. Designed specifically for 1964 - 1966 Mustangs, this single adjustable coilover kit delivers modern handling, ride quality, and stance adjustability in an easy-to-install package. Featuring a 10” spring with a 350 lb./in. rate, it’s the perfect solution for street performance or restomod builds that demand both comfort and control.

MODERN HANDLING & ADJUSTABILITY

Factory suspension setups limit tuning and performance. With QA1’s single adjustable coilovers, you can dial in rebound and compression with a simple turn of the knob, letting you fine-tune ride quality and handling for daily driving or spirited performance.

RIDE HEIGHT FLEXIBILITY

This system allows you to adjust ride height from factory stock height down to 2” lower. Whether you want to maintain an original look or achieve a more aggressive stance, QA1 Pro Coils let you fine-tune without sacrificing geometry or drivability.

EASY BOLT-IN INSTALLATION

No cutting, welding, or fabrication required. QA1’s Pro Coil System is designed for straightforward installation with basic tools, with either factory, or QA1 tubular control arms.

FEATURES & BENEFITS

  • Application-specific fit for 1964 -1966 Ford Mustangs
  • Single adjustable shocks with 18 settings of rebound/compression control
  • Includes 10” coil springs with a 350 lb./in. spring rate
  • Adjustable ride height: factory to –2”
  • Bolt-in installation - no major modifications required
  • Powder-coated springs and premium hardware for durability
  • Works seamlessly with QA1 control arms and sway bars

FITMENT NOTES

  • Fits 1964–1966 Ford Mustangs
  • Ride height adjustable: factory to - 2”
  • Includes single adjustable shocks and 10” 350 lb./in. springs
  • Works with factory control arms or QA1 tubular control arms and sway bars
  • Bolt-in installation - no welding required

RECOMMENDED FRONT SPRING RATE CHART

YEAR MODEL SMALL BLOCK SPRINGS BIG BLOCK SPRINGS
1964-1966 Mustang 350 450
1967-1973 Mustang 400 500

Specifications

  • Spring Rate350lb/in.
  • Springs IncludedYes
  • Shock ValvingSingle Adjustable
  • Vehicle PositionFront

FREQUENTLY ASKED QUESTIONS (FAQ’s)

What spring rate comes with the QA1 MS401-10350C coilover kit?

This system includes 10” front coil springs with a 350 lb./in. spring rate, ideal for street performance and restomod Mustangs.

How much ride height adjustment do QA1 Pro Coils provide on a 1964–1966 Mustang?

The system allows ride height adjustment from factory stock height down to 2 inches lower, giving you full control over stance and handling.

How do single adjustable QA1 coilovers work?

Single adjustable shocks provide 18 settings of combined rebound and compression adjustment. With one knob, you can easily firm or soften both rebound and compression to fine-tune comfort and performance.

Do QA1 coilover kits require modifications?

No. These kits are designed for direct bolt-in installation with basic tools.

What other suspension upgrades should I consider with QA1 Pro Coils?

Pair coilovers with QA1 tubular control arms and sway bars for a complete suspension system that maximizes geometry, handling, and ride quality.

Are QA1 single adjustable coilovers good for street driving?

Yes. They’re designed for street performance, balancing comfort and cornering ability, with simple adjustability for different driving conditions.

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