Axiom Supply Stage 1 Leveling Kit | Torsion Keys + Shock Extensions | 2" Front Lift | 2001-2010 Chevy Silverado/GMC Sierra 2500HD & 3500HD | SKU AXGM10STAGE1
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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 AXGM10STAGE1) lifts the front of 2001–2010 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks by up to 2", correcting factory rake and leveling the stance for improved appearance and larger tire clearance. Designed for strength, adjustability, and long-term reliability, this kit bundles precision-forged torsion keys with a matched shock extension system engineered for safe and proper suspension geometry — delivering a true 2-inch front lift without compromising factory ride comfort when paired with appropriate control arms. Manufactured with premium materials and a corrosion-resistant black powder-coated finish. Direct bolt-on installation, no cutting required. Designed specifically for the GMT800/GMT900 GM HD front suspension platform. Front-end alignment is mandatory after installation.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AXGM10STAGE1 |
| Brand | Axiom Supply |
| Stage | Stage 1 — torsion keys + shock extensions, bundled |
| Front Lift | 2" |
| Rear Lift | None — front leveling only |
| Construction | Precision-forged steel torsion keys, matched shock extensions |
| Finish | Corrosion-resistant black powder coat |
| Recommended Pairing | Appropriate aftermarket upper control arms |
| Platform | GMT800/GMT900 |
| Application | Daily driving, towing, hauling, 33" tires — corrects factory front-to-rear rake |
| Installation | Direct bolt-on, no cutting required |
| Sold As | Complete kit |
What Is and Is NOT Included
| Item | Included |
|---|---|
| Forged torsion key set | ✓ |
| Matched shock extension system | ✓ |
| Upper control arms | ✗ NOT included — recommended pairing, sold separately |
| Aftermarket front shocks | ✗ NOT included — see Fox 2.0 Performance Series (SKU 980-24-663) for a compatible upgrade |
Why a Bundled Stage 1 Kit
This kit pairs the torsion keys with the matching shock extension system in one purchase, ensuring correct shock travel from the first drive rather than requiring a separate shock extension purchase after the fact. The standalone torsion key set (AXGMKEY10) and standalone shock extension kit (AXGMSE10) are also available individually if you're phasing the work or already have one component.
Compatible Front Shock Upgrade for This Lift
| Series | Confirmed Lift Range | Confirmed Years | SKU |
|---|---|---|---|
| Fox 2.0 Performance Series | 0–1" front | 1999–2010 (also fits select Suburban, Yukon XL, Avalanche, Hummer H2) | 980-24-663 |
Installation Notes
- Alignment mandatory. Full front-end alignment (caster, camber, toe) is required after installation. Do not drive until aligned.
- Caster correction. A 2" front lift on the GMT800/GMT900 platform will reduce positive caster. Adjustable upper control arms or a caster correction kit are recommended for towing or highway use.
- Shock compatibility. Stock shocks may top out at full droop after leveling. The included shock extensions help, but pairing with the Fox 2.0 (980-24-663) provides correct travel range built for this exact lift height.
- Tire size. Provides clearance for tires up to approximately 33-34" on stock wheels, depending on offset and backspacing.
- Torque specs. Torque all suspension hardware to OEM specification for 2001–2010 GM 2500HD/3500HD.
- Re-torque. Re-torque all hardware after the first 500 miles of driving.
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Chevrolet Silverado 2500HD/3500HD | 2001–2010 | ✓ — GMT800/GMT900 |
| GMC Sierra 2500HD/3500HD | 2001–2010 | ✓ — GMT800/GMT900 |
| Silverado/Sierra 2500HD/3500HD | 2011 and newer | ✗ K2XX/T1XX — different front suspension geometry |
| Silverado/Sierra 1500 | Any | ✗ Different front suspension |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2011 and newer GM HD trucks | Does not fit — different front suspension geometry |
| Tires beyond 33-34" | Verify wheel offset and backspacing before upsizing — may require additional clearance work |
| Aftermarket upper control arms | Recommended for optimal performance, superior alignment, and smooth ride |
Common Questions
Does this include shocks?
It includes shock extensions, which restore correct shock travel for the new ride height when used with your existing or OE-equivalent shocks. For a dedicated performance shock matched to this lift height, pair with the Fox 2.0 Performance Series (980-24-663).
What's the difference between this and the standalone torsion key set?
This Stage 1 kit bundles the torsion keys with shock extensions in one purchase. The standalone AXGMKEY10 includes torsion keys only.
Do I need an alignment after installing this?
Yes, mandatory. Leveling kit installation directly affects caster, camber, and toe settings — do not drive until a full front-end alignment is completed.
Does this fit my 2012 Sierra 2500HD?
No. The 2011+ generation uses a different front suspension platform (K2XX/T1XX) and requires a different Axiom leveling kit.
The Obsidian Take
The AXGM10STAGE1 is for the 2001-2010 Silverado/Sierra 2500HD/3500HD owner who wants a complete, matched leveling solution in one purchase — forged torsion keys and shock extensions engineered together for correct suspension geometry, rather than piecing together components separately and hoping they're compatible.
Pair with aftermarket upper control arms for the best alignment range, and consider the Fox 2.0 (980-24-663) if you want a dedicated performance shock matched to this exact lift height rather than relying on the included extensions with your stock shocks.
Non-Returnable Notice: Once installed, this kit is non-returnable. Confirm platform generation 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 cited an unconfirmed Fox shock part number — corrected above to the confirmed manufacturer SKU from this catalog. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.