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QA1 HD02-12300 PromaStar Double-Adjustable Coilover Strut Kit 300lb Handling

(1990-1993 Ford Mustang)

Manufacturer

Picture for manufacturer QA1 Precision Products

Part Number

HD02-12300
9 reviews
Sale Price

$1,820.95

Estimated ship date Saturday, November 21

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Product Details

The QA1 HD02-12300 Proma Star Coilover Strut Kit is a complete, bolt-in front suspension upgrade designed for maximum handling performance. Featuring a 300 lb/in spring rate and double-adjustable damping, this kit delivers independent tuning of rebound and compression for precise handling in any driving condition.

Inverted Strut Design: A key advantage of the Proma Star is its inverted cartridge design. Unlike conventional struts, the large-diameter shaft resists side loading for smoother, more consistent performance during hard cornering and braking.

Double-Adjustable Damping: Independent rebound and compression adjustments are made easily via an 18-position knob accessible at the top of the strut tower — no need to lift the car. Dial in the perfect setup for autocross, road racing, or spirited street driving.

Adjustable Ride Height: The fully threaded body allows ride height adjustment from stock to 2.0 inches lowered using the threaded collar, giving you full control over stance and center of gravity.

Lightweight Aluminum Caster/Camber Plates: Included aluminum caster camber plates are significantly lighter than steel equivalents. Their durable anodized finish resists corrosion, and they provide precision geometry adjustment for improved handling and tire wear patterns.

Key Features:

  • Inverted strut cartridge design for superior side-load resistance
  • Double-adjustable compression and rebound — 18 valving positions each
  • 300 lb/in track-tuned spring rate, powder-coated gloss black
  • Fully threaded body for ride height adjustment (up to 2.0" lowered)
  • Lightweight aluminum caster/camber plates with anodized finish included
  • Compatible with both wide and narrow Fox Body spindles
  • Fully bolt-in installation — no cutting or fabrication required
  • Dyno-tested and serialized for quality control
  • Fully serviceable and rebuildable at any QA1 authorized service center
  • Made in the USA — manufactured in Lakeville, Minnesota

Kit Includes: One pair of struts, 300 lb/in springs, aluminum caster/camber plates, and all related hardware.

Products specifications

Fits

1990-1993 Ford Mustang

Prop 65

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

The website is easy to use.

Very fast shipping, now looking to purchase the front kit!

This is exactly what I ordered and I have to tell you. I'm very impressed at how fast you got this to me. I will absolutely be working with your company again. A very happy customer!

I mistakingly ordered two of the product. someone from customer service contacted me to verify it I actually wanted two. So we cancelled the extra order. Most companies would not go that step in customer service, much appreciated. The product arrived really fast and was exactly what I ordered and worked perfectly.

The price was was right and received exactly what I ordered. There was some delay from when I ordered and the shipping date. But all and all a good deal.

The order got here later then it should have because I paid for faster shipping. Other then that everything looks good.

Easy, now lets hope it gets here fast. Thank you.

The product was the cheapest at your site. I was happy the product shipped quickly and arrived exactly when I needed it. I'm very satisfied with your company!!!

Easy order

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