Axiom Supply Leveling Key Set | 2" Front Lift | 2011-2019 Chevy Silverado/GMC Sierra 2500HD & 3500HD K2XX | SKU AXGMKEY11
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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 Leveling Key Set (SKU AXGMKEY11) replaces the factory front suspension keys and lifts the front of 2011–2019 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD (K2XX platform) trucks by 2 inches — giving a flush, balanced stance while keeping the ride smooth and factory-like. Most heavy-duty trucks leave the factory with a forward "rake" to handle heavy loads; this kit corrects that look when the truck is empty and creates extra room for larger tires. Precision-forged steel construction, corrosion-resistant finish, direct bolt-on replacement for factory keys. Intended to be installed in conjunction with aftermarket upper control arms for proper performance. Front-end alignment is mandatory after installation.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AXGMKEY11 |
| Brand | Axiom Supply |
| Type | Front suspension leveling key set |
| Front Lift | 2" — fixed, not adjustable |
| Rear Lift | None — front leveling only |
| Construction | Precision-forged steel — corrosion-resistant finish |
| Recommended Pairing | Aftermarket upper control arms |
| Platform | K2XX |
| Price | $109.99 |
| Application | Daily driving, towing, hauling — corrects factory front-to-rear rake |
| Sold As | Pair |
What Is and Is NOT Included
| Item | Included |
|---|---|
| 2x forged steel leveling key | ✓ |
| Upper control arms | ✗ NOT included — recommended pairing, sold separately |
| Shock extensions or upgraded shocks | ✗ NOT included — sold separately |
GM HD Leveling Key Platform Guide
| Platform | Years | SKU |
|---|---|---|
| GMT800/GMT900 | 2001–2010 | AXGMKEY10 |
| K2XX (this listing) | 2011–2019 | AXGMKEY11 |
| T1XX | 2020–2026 | AXGMKEY20 |
Compatible Front Shock Upgrades for This Lift
| Series | Confirmed Lift Range | Confirmed Years | SKU |
|---|---|---|---|
| Fox 2.0 Performance Series | 1.5"–3.5" front | 2011–2019 | 985-24-189 |
| Fox 2.5 HTO Performance Series | 1.5"–2.5" front | 2020–2025 | 987-24-010 |
Confirm exact lift height achieved and shock compatibility before ordering — the Fox 2.5 HTO listed above is specific to the 2020-2025 chassis, not this 2011-2019 K2XX platform; for a K2XX-compatible 2.5" front shock, confirm the correct part number with us separately.
Installation Notes
- Alignment mandatory. Full front-end alignment (caster, camber, toe) is required after installation. Leveling key installation changes front suspension geometry — do not drive until aligned.
- Pair with upper control arms. This kit is intended for use alongside aftermarket upper control arms for proper alignment range and suspension geometry.
- Caster correction. A 2" front lift on the K2XX platform will reduce positive caster. A caster correction kit or adjustable upper control arms is recommended, especially for towing or highway use.
- Shock compatibility. Leveling keys extend front shock travel. Verify front shock travel is compatible with your achieved lift height — confirm the correct Fox part number for the K2XX platform with us before ordering.
- Suspension inspection. Inspect front suspension components for wear before installation. Replace worn ball joints, tie rod ends, or control arm bushings before leveling.
- Torque specs. Torque all suspension hardware to OEM specification for 2011–2019 GM 2500HD/3500HD K2XX.
- Re-torque. Re-torque all hardware after the first 500 miles of driving.
Verified Fitment
| Vehicle | Years | Status |
|---|---|---|
| Chevrolet Silverado 2500HD/3500HD | 2011–2019 | ✓ |
| GMC Sierra 2500HD/3500HD | 2011–2019 | ✓ |
| Silverado/Sierra 2500HD/3500HD | 2010 and earlier | ✗ GMT800/GMT900 platform — order AXGMKEY10 |
| Silverado/Sierra 2500HD/3500HD | 2020 and newer | ✗ T1XX platform — order AXGMKEY20 |
| Silverado/Sierra 1500 | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| 2010 and earlier GM HD trucks | Does not fit — order AXGMKEY10 instead |
| 2020 and newer GM HD trucks | Does not fit — order AXGMKEY20 instead |
| Aftermarket upper control arms | Recommended pairing for proper alignment range and suspension geometry |
| Worn suspension components | Replace ball joints, tie rod ends, or control arm bushings before leveling |
Common Questions
Is the lift adjustable?
No. This is a fixed 2" front lift, not an adjustable system.
Do I need upper control arms with this kit?
Recommended by Axiom for proper alignment range and suspension geometry — pairing the two together gives the best overall result.
What Fox shock should I pair with this?
Confirm with us directly. The Fox 2.0 Performance Series (985-24-189) is confirmed for 1.5"-3.5" front lift on the 2011-2019 K2XX platform — that's the right starting point to ask about for this specific leveling key kit.
Do I need an alignment after installing this?
Yes, mandatory. Leveling key installation changes front suspension geometry — do not drive until a full front-end alignment is completed.
The Obsidian Take
The AXGMKEY11 is for the 2011-2019 Silverado/Sierra 2500HD/3500HD owner who wants to correct factory rake and gain a fixed 2" of front lift on the K2XX platform. Precision-forged steel, direct bolt-on, pairs well with aftermarket upper control arms for proper alignment range.
The honest recommendation: pair this with aftermarket upper control arms rather than running it alone, and confirm the correct matching Fox shock part number for this specific K2XX platform before ordering — don't assume a shock SKU confirmed for a different generation applies here.
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 incorrectly described variable lift output and cited unconfirmed Fox shock part numbers — corrected above to the confirmed manufacturer SKUs from this catalog. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.