My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

QA1 MD303-08375 Coil-Over Conversion System Adjustable Mustang II Street Rod Kit

(1974-1978 Ford Mustang II)

Manufacturer

Part Number

MD303-08375
Sale Price

$949.95

Estimated ship date Monday, November 23

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The QA1 MD303-08375 is a complete coil-over conversion system designed for Ford Mustang II front suspension platforms commonly used in classic street rods and custom builds. This adjustable kit replaces the factory spring and shock arrangement with a modern, purpose-built coil-over assembly, delivering improved handling, ride height adjustability, and a cleaner engine bay appearance.

Key Features:

  • Adjustable coil-over design — allows precise ride height and spring preload tuning without removing the assembly
  • Mustang II front suspension compatibility — engineered specifically for the popular Mustang II IFS platform widely used in hot rods and street machines
  • Complete conversion kit — includes the coil spring and shock absorber assembly for a straightforward installation
  • Street rod application — optimized for street-driven custom vehicles requiring a balance of performance and everyday drivability
  • QA1 precision construction — manufactured to tight tolerances for consistent performance and long service life

QA1 Precision Products is a leading manufacturer of performance suspension components, driveline parts, and rod ends trusted by professional builders and enthusiasts alike. The MD303-08375 coil-over conversion system is an excellent upgrade for any Mustang II-based build seeking improved suspension geometry and a polished, performance-oriented look.

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

Stock 7/16" ID, Bushing

Notes

7/16 in. bolt hole, bushing. 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 MD303-08375

Prop 65

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

Great price and shipping was far better than other sites.

Great deal on my purchase. Tracking # given once order shipped 2 businesss days later. Good merchant.

everything was good thanks

For as cheap as what I paid for my product I will admit I was scared!!! Got what I asked for in perfect condition, came fast and wonder where have you been all my shopping life? Thanx for such a great deal and fast shipping!!!

very good

I do not want to share my Amazon information!

thanks for great price and free shipping

I had a smog guy call me out that my filter was ok, my truck passed but since my pipe wasn't name brand we wouldn't pass me. It's a 2008 Nissan Titan. Needless to say I wasn't to happy about it but this place had what I needed for about $50 less than anywhere else and it shipped within 2 days. So far, so good, thanks Autoplicity

Best price I found, They actually had the Items I ordered in stock. They send me an email to let me know my order has ship. I am Extremely HAPPY!

Very good first experience with Autoplicity. Order arrived promptly. No issues.

So far so good.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy