MD402-10450C Front Pro Coil Shock System, Double Adjustable, Ford, 10in. Spring, 450lb./in.

MD402-10450C Front Pro Coil Shock System, Double Adjustable, Ford, 10in. Spring, 450lb./in.

QA1

SKU
MD402-10450C
$1,079.95
Estimated Shipping Date: Jun 25, 2026
Adding to cart… The item has been added
Installation Guide
California Prop 65
Emissions Code 4

Upgrade your classic Mustang with modern suspension performance using QA1’s Front Pro Coil System. Designed specifically for 1967–1973 Mustangs, this kit delivers exceptional handling, ride quality, and stance control. Featuring 10” coil springs with a 450 lb./in. rate, it’s tailored for heavier ’67–’73 cars, offering the strength and balance needed for street performance, restomods, and spirited driving.

TOTAL CONTROL WITH DOUBLE ADJUSTABILITY

QA1’s double adjustable shocks give you independent control of rebound and compression, each with 18 clicks of adjustment. This allows you to fine-tune your Mustang’s ride and handling for different driving conditions — from comfortable cruising to track-ready precision.

RIDE HEIGHT FLEXIBILITY

Fine-tune your stance with ride height adjustability from factory stock height down to 2” lower. Whether you want to maintain a stock look or drop the front end for a more aggressive appearance, QA1 coilovers let you do it without sacrificing drivability.

EASY BOLT-IN INSTALLATION

Engineered for a true bolt-in installation, this system requires no welding or cutting. With premium hardware and powder-coated springs, it’s built for durability and installs with standard tools.

FEATURES & BENEFITS

  • Application-specific fit for 1967–1973 Ford Mustangs
  • Double adjustable shocks: 18 rebound & 18 compression settings
  • Includes 10” coil springs with a 450 lb./in. spring rate
  • Ride height adjustable: factory to –2”
  • Direct bolt-in installation - no welding required
  • Powder-coated springs and premium hardware for long-lasting durability
  • Works seamlessly with QA1 tubular control arms and sway bars

FITMENT NOTES

  • Fits 1967–1973 Ford Mustangs
  • Ride height adjustable: factory to –2”
  • Includes double adjustable shocks and 10” 450 lb./in. springs
  • Works with factory control arms or QA1 tubular control arms and sway bars (available for 67-70 Mustangs only)
  • Bolt-in installation - no welding required
  • Sold as a pair

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 Rate450lb/in.
  • Springs IncludedYes
  • Shock ValvingDouble Adjustable
  • Vehicle PositionFront

FREQUENTLY ASKED QUESTIONS (FAQ’s)

What spring rate is included with the MD402-10450C coilover kit?

The kit includes 10” 450 lb./in. springs.

What’s the benefit of double adjustable shocks?

Double adjustable shocks provide independent rebound and compression adjustments, giving you more precise control over ride quality and handling balance.

How much ride height adjustment do these coilovers provide?

You can adjust ride height from factory stock to 2 inches lower, offering full stance flexibility.

Do I need to weld or cut anything to install these?

No. QA1 coilover kits are designed as direct bolt-in replacements, requiring no fabrication.

Are QA1 double adjustable coilovers good for street driving?

Yes. They provide street-friendly ride quality with the adjustability to firm things up for aggressive driving or track days.

What other suspension upgrades pair well with QA1 coilovers?

QA1 tubular control arms and sway bars are recommended for maximum handling improvements and geometry optimization. (available for 67-70 Mustangs only)

!