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QA1 MD301-08375 Coil-Over Conversion System Adjustable Mustang II Street Rod Kit

(1974-1978 Ford Mustang II)

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

MD301-08375
13 reviews
Sale Price

$949.95

Estimated ship date Friday, November 20

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Fitment guaranteed

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Product Details

The QA1 MD301-08375 is a complete coil-over conversion system designed for Ford Mustang II front suspension applications commonly used in street rod and custom vehicle builds. This adjustable assembly combines a coil spring and shock into a single integrated unit, simplifying the front suspension while providing a wide range of ride height and handling tunability.

Key Features:

  • Complete coil-over conversion kit — includes all components needed for a full front suspension upgrade
  • Adjustable ride height — threaded shock body allows precise ride height tuning without changing springs
  • Mustang II platform compatibility — engineered for the popular Mustang II-style front subframe widely used in street rods and custom builds
  • QA1 performance shock internals — valved for street performance with a balance of ride comfort and handling response
  • Coil-over design — integrates the spring and shock into one compact assembly for clean installation and reduced complexity
  • Street rod and custom application focused — ideal for hot rods, custom builds, and restomod vehicles using the Mustang II suspension architecture

QA1 Precision Products is a leading manufacturer of performance suspension, driveline, and rod end components. The MD301-08375 coil-over system is a popular choice among street rod builders who demand adjustability and reliable performance from their front suspension without sacrificing ride quality on the street.

Products specifications

Fits

1974-1978 Ford Mustang II

Adjustable Mounting Bracket Included

No

Adjustable Valving

Yes

Coil-Over Kit Position

Front

Coil-Over Springs Included

Yes

Collapsed Length (in)

7.625 in

Crossmember Included

No

Extended Length (in)

11.125 in.

Gas Charged

No

Lower Mount

Eyelet

Mounting

1/2" ID, Bushing

Notes

1/2 in. bolt hole, bearing. Double-adjustable. Shocks are remote-ready, they can be used with the QA1 2 or 4-channel remote adjustable system.

Number of Valving Selections

324

Quantity

Sold as a kit.

Recommended Front-End Weight

1,150-1,350 lbs.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Shocks Included

Yes

Spring Finish

Chrome plated

Spring Rate (lbs/in)

375 lbs./in.

Suspension Height Adjustment

0.0-3.0 in. lowered

Upper Mount

Stud

Welding Required

No

Title

QA1 Shock Absorber and Coil Spring Assembly MD301-08375

Prop 65

WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov

Great prices, great selection

So far found what I've been looking for so I'm satisfied currently

Easy ordering

fast ordering

Thanks for providing a cost effective, reasonable shipping, and fair alternative to high priced on line vendors!

Thanks

Easy!

Product was exactly as described. Rob@Autoplicity was great when I had an issue with packages being stolen from my porch and got it delivered to a secure site. Great company and will order from again when I need parts for my Acura.<br><br>Disclaimer: 5 star rating seems cliche but this was exactly what I hope for in online purchase experiences.

Good prices and quick shipment

Amazing! Product was exactly as described, price was excellent, and shipping was extremely fast. Will buy from again!!

Received the product I ordered promptly, with no hassles. Happy with this transaction.

Very fast shipping & good prices.

Authentic, hard to find item listed for the least expensive price online! Good customer service and fast shipping time!!

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