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QA1 Pro front coil-over system full view
Close-up of double adjustable aluminum coil-over
Flat Large spring pocket detail
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QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 400lbs/in - Flat Large - Aluminum

QA1
QAPGD401-10400C
806990062574
Coilovers
1 Units In Stock - Ships Next Business Day
$ 1,069.01 $ 964.95
$ 964.95

SKU: GD401-10400C   |   UPC: 806990062574

QA1 Pro Front Coil-Over System - Double Adjustable - 10" x 400 lb/in - Flat Large - Aluminum for GM Vehicles

The QA1 GD401-10400C Pro Front Coil-Over System is the ultimate bolt-in suspension upgrade for performance GM vehicles. This double-adjustable kit features lightweight aluminum shocks with independent 18-position compression and 18-position rebound tuning (324 possible combinations) and 10" high-travel 400 lb/in springs. It delivers fully adjustable ride height, superior handling, and the ability to fine-tune for street, autocross, drag racing, or road course use. The "Flat Large" configuration is optimized for popular GM muscle car and truck applications requiring a larger spring pocket.

Key Features

  • Double Adjustable Shocks: Independent compression and rebound control with 18 clicks each
  • 400 lb/in High-Travel Springs: Performance rate for excellent support and weight transfer
  • 10" Spring Length: Optimized for lowered applications with maximum travel
  • Fully Threaded Aluminum Body: Easy, precise ride height adjustment
  • Bolt-In Installation: Direct replacement for factory coil springs and shocks
  • Lightweight Design: Reduces unsprung weight for improved handling and response

Specifications

Specification Detail
Part Number GD401-10400C
Position Front
Shock Type Double Adjustable Aluminum Coil-Over
Spring Rate 400 lb/in
Spring Length 10"
Spring Pocket Flat Large
Compatibility Various GM Performance Vehicles (Chevelle, Camaro, Nova, C10, etc.)
Installation Bolt-On Direct Replacement
Country of Origin United States
Warranty Limited Lifetime (QA1)
Shipping Weight Approx. 35-45 lbs

What's Included

  • Pair of QA1 Double Adjustable Front Pro Coil Shocks
  • Pair of 10" x 400 lb/in High-Travel Springs
  • All Necessary Mounting Brackets and Hardware
  • Detailed Installation Instructions

Product Notes

  • Designed for GM vehicles requiring the "Flat Large" spring pocket configuration
  • 400 lb/in spring rate is ideal for performance and aggressive driving applications
  • Professional installation and front alignment recommended

Installation Notes

  • Estimated time: 4-6 hours, moderate difficulty
  • Bolt-on system using factory mounting points
  • Full front alignment required after installation

This Part Fits

Application Notes
Various GM Muscle Cars & Trucks Chevelle, Camaro, Nova, C10, and other GM vehicles requiring Flat Large spring pocket

Why Choose QA1 Pro Front Coil-Over System?

  • Full double-adjustable control for perfect ride height and handling balance
  • Lightweight aluminum shocks with high-travel springs for maximum performance
  • Premium QA1 quality made in the USA with lifetime warranty confidence

Frequently Asked Questions

  • Q: What vehicles does this fit?
    A: Designed for various GM performance applications requiring the Flat Large spring pocket (Chevelle, Camaro, Nova, C10, etc.).
  • Q: What spring rate is included?
    A: 400 lb/in excellent performance rate for aggressive driving.
  • Q: Is an alignment required?
    A: Yes, a full front alignment is required after installation.
  • Q: What is the warranty?
    A: Covered by QA1’s limited lifetime warranty.

Shipping & Handling

  • Method: UPS / FedEx Ground (Oversize)
  • Availability: In stock ships same or next business day
  • Packaging: Secure protective packaging
  • Weight: Approx. 35-45 lbs

Request For Information

Have questions about QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 400lbs/in - Flat Large - Aluminum? Fill out the form below and we'll get back to you by the next business day.
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