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Fulfillment From Multiple U.S. Warehouses
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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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QA1
QA1 Pro Front Coil-Over System Single Adjustable 10in 650lb/in for 1999-2006 Silverado/Sierra 1500
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
Fits select 1999-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 models, including Base, LS, LT, SS, SLE, SLT, and Denali trims.
The QA1 Pro Coil System (MPN: GS517-10650C) offers a significant suspension upgrade for GMT800-platform trucks, providing precision ride height control and valving adjustment. This single-adjustable system features a single knob that simultaneously adjusts both compression and rebound damping, allowing you to dial in ride quality and handling performance for street or track use. The lightweight billet aluminum shock bodies are fully threaded, providing up to 2 inches of ride height adjustment to achieve the ideal stance or weight balance.
- Single adjustable valving (rebound and compression adjusted simultaneously)
- 10-inch high-travel springs with a 650 lbs/in spring rate
- Lightweight billet aluminum shock construction
- Easy bolt-in installation compatible with factory or QA1 tubular control arms
- 100% dyno tested and serialized
- Fully serviceable and rebuildable by QA1 authorized centers
- Proudly made in the USA
- Includes a Limited Lifetime Warranty
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2004-2006 | Chevrolet | Silverado 1500 | Hybrid |
| 1999-2006 | Chevrolet | Silverado 1500 | LS |
| 1999-2006 | Chevrolet | Silverado 1500 | LT |
| 2003-2006 | Chevrolet | Silverado 1500 | SS |
| 2002-2006 | Chevrolet | Silverado 1500 | WT |
| 2004-2005 | Chevrolet | Silverado 1500 | Z71 Off-Road |
| 2002-2005 | GMC | Sierra 1500 | Base |
| 2001 | GMC | Sierra 1500 | C3 |
| 2002-2006 | GMC | Sierra 1500 | Denali |
| 2002 | GMC | Sierra 1500 | HT |
| 2005-2006 | GMC | Sierra 1500 | Hybrid |
| 1999-2003,2006 | GMC | Sierra 1500 | SL |
| 1999-2006 | GMC | Sierra 1500 | SLE |
| 1999-2006 | GMC | Sierra 1500 | SLT |
| 2002-2006 | GMC | Sierra 1500 | WT |
Choose your Location
-
Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
QA1 Pro Front Coil-Over System Single Adjustable 10in 650lb/in for 1999-2006 Silverado/Sierra 1500
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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Fits select 1999-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 models, including Base, LS, LT, SS, SLE, SLT, and Denali trims.
The QA1 Pro Coil System (MPN: GS517-10650C) offers a significant suspension upgrade for GMT800-platform trucks, providing precision ride height control and valving adjustment. This single-adjustable system features a single knob that simultaneously adjusts both compression and rebound damping, allowing you to dial in ride quality and handling performance for street or track use. The lightweight billet aluminum shock bodies are fully threaded, providing up to 2 inches of ride height adjustment to achieve the ideal stance or weight balance.
- Single adjustable valving (rebound and compression adjusted simultaneously)
- 10-inch high-travel springs with a 650 lbs/in spring rate
- Lightweight billet aluminum shock construction
- Easy bolt-in installation compatible with factory or QA1 tubular control arms
- 100% dyno tested and serialized
- Fully serviceable and rebuildable by QA1 authorized centers
- Proudly made in the USA
- Includes a Limited Lifetime Warranty
📘 Guides & Manuals
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2004-2006 | Chevrolet | Silverado 1500 | Hybrid |
| 1999-2006 | Chevrolet | Silverado 1500 | LS |
| 1999-2006 | Chevrolet | Silverado 1500 | LT |
| 2003-2006 | Chevrolet | Silverado 1500 | SS |
| 2002-2006 | Chevrolet | Silverado 1500 | WT |
| 2004-2005 | Chevrolet | Silverado 1500 | Z71 Off-Road |
| 2002-2005 | GMC | Sierra 1500 | Base |
| 2001 | GMC | Sierra 1500 | C3 |
| 2002-2006 | GMC | Sierra 1500 | Denali |
| 2002 | GMC | Sierra 1500 | HT |
| 2005-2006 | GMC | Sierra 1500 | Hybrid |
| 1999-2003,2006 | GMC | Sierra 1500 | SL |
| 1999-2006 | GMC | Sierra 1500 | SLE |
| 1999-2006 | GMC | Sierra 1500 | SLT |
| 2002-2006 | GMC | Sierra 1500 | WT |
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