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QA1 GD401-10550B coil-over system full view
Independent compression and rebound knobs close up
10in high travel 550lbs/in spring detail
Coil-overs installed on GM front suspension
Click to zoom in

QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 550lbs/in - Flat - Aluminum

QA1
QAPGD401-10550B
806990062536
Coilovers
1 Units In Stock - Ships Next Business Day
$ 1,069.01 $ 964.95
$ 964.95

SKU: GD401-10550B   |   UPC: 806990062536


QA1 GD401-10550B GM Pro Front Coil-Over System – Double Adj. 10in x 550lbs/in Flat Aluminum

The QA1 GM Pro front coil-over system with double adjustable valving. Lightweight billet aluminum shocks paired with high travel 550lbs/in springs deliver fully adjustable ride height, independent compression and rebound damping, superior handling, and race-proven performance the ultimate front suspension upgrade for any classic GM muscle car or street/strip build seeking precise tuning and maximum control.

Key Features

  • Double Adjustable Valving – Independent compression and rebound adjustment for fine-tuning ride and handling
  • Lightweight Billet Aluminum Shocks – High strength and reduced unsprung weight for improved response
  • High Travel Springs – 10in length with 550lbs/in rate for increased travel and better suspension performance
  • Ride Height Adjustable – Fully threaded body allows precise stance and weight balance tuning
  • Flat Base – Designed for optimal fitment on GM applications
Spec Detail
Part Number GD401-10550B
Brand QA1
Type GM Pro Front Coil-Over System
Adjustability Double Adjustable (Independent Compression and Rebound)
Spring Rate 550 lbs/in
Spring Length 10 in
Material Billet Aluminum Shocks
Base Flat
Country of Origin United States
Warranty QA1 Limited Lifetime

Whats Included

  • Pair of QA1 Double Adjustable Coil-Over Shocks
  • High Travel 550lbs/in Springs
  • Mounting hardware
  • Installation instructions

Product Notes

  • Designed for classic GM muscle car front suspension applications
  • 100% dyno tested and serialized for quality assurance
  • Serviceable and rebuildable by QA1 authorized centers

Installation Notes

  • Easy bolt-in installation
  • Estimated time: 4–6 hours
  • Professional installation and alignment highly recommended

This Part Fits

Year Range Make Model Trim / Engine Notes
Various Chevrolet Classic GM Muscle Cars Front suspension Verify application

Why Choose QA1 GM Pro Coil-Over Systems?

  • #1 choice for adjustable coil-over performance on classic GM vehicles
  • Built & tested in the United States
  • Chosen by muscle car builders and racers for tuning flexibility and durability

Frequently Asked Questions

  • Q: Does this fit my 1969 Chevrolet Camaro?
    A: Yes, designed for classic GM front suspension; verify specific fitment details.
  • Q: How do I adjust the valving?
    A: Independent compression and rebound adjustments via external knobs for custom tuning.
  • Q: What spring rate is best for street use?
    A: 550lbs/in provides good balance; softer rates available for comfort.

Shipping & Handling

  • Method: Ground UPS or FedEx
  • Availability: In stock – ships same or next business day
  • Packaging: Official QA1 retail box

Request For Information

Have questions about ? Fill out the form below and we'll get back to you by the next business day.
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