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QA1 MD303-08500 Coilover Spring & Shock Assembly – Mustang II Street Rod Adjustable Kit

(1974-1978 Ford Mustang II)

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

MD303-08500
13 reviews
Sale Price

$949.95

Estimated ship date Monday, November 23

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Product Details

The QA1 MD303-08500 is an adjustable coil-over conversion system designed for Ford Mustang II front suspension setups commonly used in street rods and custom builds. This kit pairs a coilover spring with a performance shock absorber to replace OEM-style components, delivering a cleaner installation with improved ride height adjustability and handling characteristics.

Key Features:

  • Adjustable coil-over design – allows fine-tuning of ride height to suit your build and driving style
  • Mustang II front suspension compatible – a popular front subframe swap used in countless street rod and custom vehicle applications
  • Matched spring and shock assembly – spring and shock are engineered together for balanced performance and consistent damping
  • Street rod and custom application focused – ideal for builders seeking a performance upgrade over stock-style components
  • QA1 precision engineering – manufactured to tight tolerances for reliable, repeatable performance

QA1 Precision Products is a well-regarded manufacturer of suspension, driveline, and chassis components for racing and performance street applications. The MD303-08500 is part of their Mustang II coil-over lineup, making it a trusted choice for hot rod builders and custom fabricators looking to maximize the potential of a Mustang II front clip.

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

1,351-1,525 lbs.

Shock Body Finish

Clear anodized

Shock Body Material

Aluminum

Shocks Included

Yes

Spring Finish

Chrome plated

Spring Rate (lbs/in)

500 lbs./in.

Suspension Height Adjustment

0.0-3.0 in. lowered

Upper Mount

Stud

Welding Required

No

Prop 65

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

Title

QA1 Shock Absorber and Coil Spring Assembly MD303-08500

Great price, good site. Ordered a Thule 956 Parkway. Came in a reasonable amount of time. Order 54#230

Thanks for ease of purchase.

My order was handled promptly and was the best price I could find for a Vibrant Windshield Washer Bottle Replacement.

Execellent retailer. Easy to buy from online. Got product quickly at a great price. I highly recommend!

awsome

All parts I ordered were in stock and arrived 4 days after I ordered them! One item was even 46% less than any other place online. I'm super pleased.

This was a nice website that offered the part that I wanted with a quick service. The customer service is great. This is a very caring company and care about their customers. They do what it takes to make them happy. I will definitely always check this site when looking for parts in ther future.

Very fast checkout

Best price! Thank you!!

Had a problem but they fixed it. Fast shipping.

The cheapest price on the net and very fast shipping. I received my items in 3 days and they were delivered on a Saturday to make things even better. <br><br>Will be using these guys again real soon.

Ordered a DiabloSport tuner for my truck here, as they had the lowest prices on the web with shipping. Order was placed on Saturday and shipped Monday. Although I received my tracking number on Tuesday, I was pleasantly surprised that they had already shipped it out. Nonetheless, my transaction was flawless. I would order from them again with no doubts.

good price and the part was here in just a few days.

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