Axiom Supply Stage 1 Leveling Kit | Torsion Keys + Shock Extensions | 2" Front Lift | 1999-2006 Chevy Silverado/GMC Sierra 1500 6-Lug | SKU AXGM99STAGE1
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
The Axiom Supply Stage 1 Leveling Kit (SKU AXGM99STAGE1) is a complete front leveling system for 1999–2006 Chevrolet Silverado 1500 and GMC Sierra 1500 6-lug trucks (GMT800 torsion bar platform). The factory GM 1500 front end sits lower than the rear by design — this kit raises the front to eliminate factory rake, creating a level stance and improving clearance for larger tires. Built from high-strength forged steel and finished with a premium black powder coat, this kit bundles precision-forged torsion keys with heavy-duty shock spacers, engineered together to provide up to 2 inches of front lift while maintaining factory ride quality. Designed specifically for the GMT800 torsion bar front suspension geometry. Direct bolt-on installation. Front-end alignment is mandatory after installation.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AXGM99STAGE1 |
| Brand | Axiom Supply |
| Type | Stage 1 front leveling kit — torsion keys + shock spacers, bundled |
| Front Lift | Up to 2" |
| Platform | GMT800 torsion bar front suspension |
| Construction | Forged steel torsion keys, heavy-duty shock spacers |
| Finish | Black powder coat |
| Price | $149.99 |
| Application | Daily driving, towing, light off-road — eliminates factory front-to-rake |
| Sold As | Complete kit |
What Is and Is NOT Included
| Item | Included |
|---|---|
| Forged steel torsion key set | ✓ |
| Heavy-duty shock spacers | ✓ |
| Upper control arms | ✗ NOT included — recommended pairing, sold separately |
| Aftermarket performance shocks | ✗ NOT included — sold separately if upgrading beyond stock |
GM 1500 Leveling Kit Platform Guide
| Platform | Years | SKU | Price |
|---|---|---|---|
| GMT800 torsion bar 6-lug (this listing) | 1999–2006 | AXGM99STAGE1 | $149.99 |
| GMT900/K2XX coil spring strut | 2007–2018 | AXGM07STAGE1 | $69.99 |
These two platforms use entirely different suspension architectures (torsion bar vs. strut) — confirm your model year before ordering.
Stage 1 Bundle vs. Standalone Components
| Product | SKU | Price | Contents |
|---|---|---|---|
| Stage 1 Leveling Kit (this listing) | AXGM99STAGE1 | $149.99 | Torsion keys + shock spacers, bundled |
| Leveling Key Set (standalone) | AXGMKEY99 | $109.99 | Torsion keys only |
| Shock Extension Kit (standalone) | AXGMSE99 | $44.99 | Shock extensions only |
The Stage 1 bundle ($149.99) costs less than buying the key set and shock extension kit separately ($109.99 + $44.99 = $154.98), and ensures correct shock travel from the first drive without a second front-end disassembly.
Installation Notes
- Alignment mandatory. A full front-end alignment (caster, camber, toe) is required after installation. Do not drive beyond a short test drive until aligned.
- 6-lug confirmation required. Confirm your truck is the 6-lug configuration. 4-lug models use different front suspension geometry and this kit will not fit.
- Pair with upper control arms. Pairing the keys with aftermarket upper control arms and compatible shocks ensures optimal performance, superior alignment, and a smooth ride.
- Tire clearance verification. If upsizing tires, verify clearance at full lock and full compression after installation.
- Torque specs. Torque all hardware to OEM specification for 1999–2006 GM 1500.
- Re-torque. Re-torque all hardware after the first 500 miles of driving.
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Chevrolet Silverado 1500 6-lug | 1999–2006 | ✓ — GMT800 torsion bar |
| GMC Sierra 1500 6-lug | 1999–2006 | ✓ — GMT800 torsion bar |
| Silverado/Sierra 1500 | 2007 and newer | ✗ Coil spring strut suspension — order AXGM07STAGE1 instead |
| Silverado/Sierra 1500, 4-lug | 1999–2006 | ✗ Different front suspension geometry |
| Silverado/Sierra 2500HD/3500HD | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2007 and newer Silverado/Sierra 1500 | Does not fit — coil spring strut suspension, order AXGM07STAGE1 |
| 4-lug Silverado/Sierra 1500 | Does not fit — different front suspension geometry |
| 2500HD/3500HD | Does not fit — different platform entirely |
Common Questions
Does this include the shock extensions, or do I need to buy them separately?
Included. This Stage 1 kit bundles the torsion keys with shock spacers in one purchase, so you don't need a second front-end disassembly later to add shock extensions.
How do I know if my truck is 6-lug?
Count the wheel lugs. 6-lug and 4-lug 1999-2006 GM 1500 trucks use different front suspension geometry — this kit is for 6-lug only.
Does this fit my 2008 Silverado 1500?
No. The 2007+ generation switched to a coil spring strut front suspension. Order AXGM07STAGE1 instead.
Do I need an alignment after installing this?
Yes, mandatory. Do not drive beyond a short test drive until a full front-end alignment is completed.
The Obsidian Take
The AXGM99STAGE1 is for the 1999-2006 Silverado/Sierra 1500 6-lug owner who wants a complete, bundled leveling solution — forged torsion keys and shock spacers engineered together, sold for less than buying both components separately, and saving a second front-end teardown to add shock extensions later.
Pair with aftermarket upper control arms for the best alignment range and ride quality, and confirm your truck is genuinely 6-lug, not 4-lug, before ordering — the two use different front suspension geometry entirely.
Non-Returnable Notice: Once installed, this kit is non-returnable. Confirm lug pattern and model year before ordering. A full front-end alignment is required after installation.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation. Input data understated the bundled nature of this kit. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.