Axiom Supply Front Lower Bump Stop Kit | Leveled & Lifted Only | 2001-2010 Chevy Silverado/GMC Sierra 2500HD & 3500HD | Pair | SKU AXGM201426
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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 Front Lower Bump Stop Kit (SKU AXGM201426) is engineered specifically for leveled or lifted 2001–2010 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks (GMT800 and GMT900 platforms, 8-lug). On these platforms, factory bump stops are made of a foam-like material that dry-rots, cracks, and crumbles after a decade of use, and factory-height units don't reach properly once the truck is leveled or lifted. This kit is engineered to stay in constant contact with the lower control arm at the new ride height, providing a consistent cushion that shields shocks and control arms from harsh metal-on-metal contact. Built with heavy-duty, long-lasting materials designed to withstand repeated compression in towing, hauling, and off-road use. Sold as a pair (left and right) with mounting hardware. OEM-style direct-fit installation.
Will not fit stock-height (factory ride height) trucks. This kit is specifically for leveled or lifted applications.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | AXGM201426 |
| Brand | Axiom Supply |
| Type | Front lower bump stop kit |
| Platform | GMT800 / GMT900, 8-lug |
| Ride Height Compatibility | Leveled or lifted trucks only — NOT for stock height |
| Quantity | Pair (left and right) with mounting hardware |
| Fitment | OEM-style direct fit — front lower control arm mount |
| Application | Towing, hauling, off-road — compression travel limiting and impact absorption on leveled/lifted trucks |
| Sold As | Pair |
What Is and Is NOT Included
| Item | Included |
|---|---|
| Front lower bump stop kit (pair) | ✓ |
| Mounting hardware | ✓ |
| Compatibility with stock-height (factory ride height) trucks | ✗ NOT included — this kit will not fit factory height |
Symptoms of Worn or Collapsed Bump Stops
- Harsh clunking or banging from the front suspension during hard compression or off-road use
- Metal-to-metal contact sound at full suspension compression
- Visible cracking, tearing, or complete collapse of the bump stop material on inspection
- Control arm or frame contact marks indicating over-travel
Lifted Truck Note
On GMT800/GMT900 trucks running a leveling kit or front lift, factory-height bump stops sit too low to properly contact and protect the lower control arm at the new ride height — this is exactly the gap this kit is designed to bridge.
Installation Notes
- Replace in pairs. Replace bump stops on both sides simultaneously. Mismatched bump stop condition between left and right will cause unequal compression limiting and inconsistent handling under load.
- Inspect control arm and frame. Before installing new bump stops, inspect the lower control arm and frame contact surface for deformation or damage from previous metal-to-metal contact. Address any damaged surfaces before returning the vehicle to service.
- Pairing recommendation. Replace bump stops when installing leveling kits, lift kits, or new shocks to ensure correct compression travel at the new ride height.
- Torque specs. Torque bump stop mounting hardware to OEM specification for 2001-2010 GM 2500HD/3500HD.
Verified Fitment
| Vehicle | Years | Ride Height | Status |
|---|---|---|---|
| Chevrolet Silverado 2500HD | 2001–2010 | Leveled or lifted | ✓ |
| Chevrolet Silverado 3500HD | 2001–2010 | Leveled or lifted | ✓ |
| GMC Sierra 2500HD | 2001–2010 | Leveled or lifted | ✓ |
| GMC Sierra 3500HD | 2001–2010 | Leveled or lifted | ✓ |
| Silverado/Sierra 2500HD/3500HD | 2001–2010 | Stock (factory) height | ✗ Will not fit |
| Silverado/Sierra HD | 2011 and newer | Any | ✗ Different front lower control arm bump stop configuration (K2XX/T1XX) |
| Silverado/Sierra 1500 | Any | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| Stock-height (factory ride height) trucks | Not compatible — this kit is designed exclusively for leveled or lifted ride heights |
| 2011 and newer GM HD trucks | Does not fit — K2XX/T1XX front lower control arm bump stop configuration is incompatible |
| Silverado/Sierra 1500 | Not compatible — different platform |
Common Questions
Will this fit my stock-height Silverado 2500HD?
No. This kit is specifically designed for leveled or lifted applications and will not fit correctly at factory ride height.
Why do factory bump stops fail on these trucks?
On the GMT800/GMT900 platform, factory bump stops are made of a foam-like material that dry-rots, cracks, and crumbles after roughly a decade of use, especially on trucks used for towing, hauling, or off-road work.
Does this fit my 2014 Silverado 2500HD?
No. The 2011+ generation uses a different front lower control arm bump stop configuration — confirm the correct Axiom HD kit for that generation.
The Obsidian Take
The AXGM201426 is for the leveled or lifted 2001-2010 Silverado/Sierra 2500HD/3500HD owner whose factory bump stops have dry-rotted, cracked, or no longer reach the lower control arm properly at the new ride height. Heavy-duty replacement material, direct-fit into the factory mounting points, designed to stay in constant contact with the control arm and shield shocks and suspension components from harsh metal-on-metal contact.
The one thing that absolutely has to be confirmed before ordering: this is not a stock-height replacement part. If the truck is still at factory ride height, this kit will not fit or function correctly — it exists specifically to bridge the gap a lift or level creates.
Non-Returnable Notice: Once installed, this kit is non-returnable. Confirm the truck is leveled or lifted (not stock height) before ordering.
Manufacturer Data Disclaimer: Specifications sourced from Axiom Supply and authorized distributor documentation. Input data did not state the confirmed leveled/lifted-only restriction — corrected above per Axiom's own product documentation. Obsidian Forged Auto Supply is an authorized Axiom Supply dealer. Manufacturer specifications are subject to change without notice.