1. Product Overview
The PRO SERIES AAM 9.25" Low Profile Truss is a specialized component designed for automotive axle applications. It is engineered to facilitate the mounting of link bracketry and assist in the precise positioning of an axle within a vehicle.
This truss is constructed from durable steel plate, utilizing both ¼" and 3/16" thickness for robust performance. Its design is optimized for custom applications rather than direct factory replacements.

Figure 1: PRO SERIES AAM 9.25" Low Profile Truss, top view.
2. Key Features and Compatibility
- Durable Construction: Manufactured from ¼" and 3/16" thick steel plate for enhanced strength and longevity.
- Low Profile Design: Optimized for applications requiring minimal vertical clearance.
- Application Specific: Designed to fit the 2003-2013 front axle truss for the AAM 9.25 found in Dodge 2500 and 3500 trucks.
Important Compatibility Note: This truss is specifically engineered for custom installations and is not intended for use as a direct replacement in factory applications. It will not be compatible with factory Dodge axle brackets. Users must refer to the provided axle casting images and compare them against their existing axle to ensure proper fitment before installation.

Figure 2: Illustrative view of the truss mounted on an axle assembly.

Figure 3: Reference images of AAM 9.25 axle castings for fitment verification. Compare these views with your vehicle's axle to confirm compatibility.
3. Setup and Installation
Installation of the PRO SERIES AAM 9.25" Low Profile Truss requires specialized tools and expertise. It is recommended that installation be performed by a qualified professional or an individual with significant experience in automotive fabrication and axle modification.
3.1 Pre-Installation Checks
- Verify the truss compatibility with your specific AAM 9.25 axle by comparing your axle's casting to the reference images provided in Section 2.
- Ensure all necessary tools and safety equipment are available.
- Confirm the truss is in good condition, free from any shipping damage or manufacturing defects. The exterior is unfinished and may require preparation before final installation.
3.2 General Installation Guidelines
While specific step-by-step instructions are dependent on the custom application, the general process involves:
- Securely supporting the vehicle and axle assembly.
- Careful positioning and alignment of the truss on the axle housing.
- Welding or securely fastening the truss to the axle, ensuring proper penetration and structural integrity.
- Mounting of link bracketry to the truss as required by the vehicle's suspension design.
- Thorough inspection of all welds and fasteners post-installation.
Disclaimer: Improper installation can lead to severe vehicle damage or personal injury. If you are not confident in your ability to perform this installation, seek professional assistance.
4. Operating Considerations
The PRO SERIES AAM 9.25" Low Profile Truss is a structural component designed to reinforce the axle and provide mounting points for suspension components. Once properly installed, it operates passively as part of the vehicle's axle and suspension system.
Its primary function is to enhance the structural integrity of the axle, particularly in demanding off-road or heavy-duty applications, and to provide a stable platform for custom link suspension setups. No active operation or user interaction is required after installation.
5. Maintenance
Given its nature as a structural component, the PRO SERIES AAM 9.25" Low Profile Truss requires minimal maintenance. However, periodic inspection is crucial to ensure long-term reliability and safety.
5.1 Inspection Schedule
- Initial Inspection: Immediately after installation and before the first use under load.
- Routine Inspection: Every 6-12 months, or more frequently if the vehicle is subjected to extreme conditions (e.g., heavy off-roading, towing).
5.2 Inspection Points
- Check all welds for cracks, corrosion, or signs of fatigue.
- Inspect the truss body for any deformation, dents, or significant rust.
- Ensure any attached link bracketry or components are securely fastened and free from excessive wear.
- Clean any accumulated dirt or debris from the truss and surrounding axle area.
If any damage or significant wear is observed, consult with a qualified mechanic or fabricator for repair or replacement.
6. Troubleshooting
As a passive structural component, the PRO SERIES AAM 9.25" Low Profile Truss typically does not experience "trouble" in the traditional sense. Issues are almost exclusively related to improper installation or extreme stress beyond design limits.
6.1 Common Concerns and Solutions
| Symptom | Possible Cause | Recommended Action |
|---|---|---|
| Cracks in welds or truss body | Improper welding technique, excessive stress, material fatigue. | Immediately cease vehicle operation. Consult a certified welder or fabricator for assessment and repair. |
| Deformation or bending of truss | Impact damage, overloading, incorrect application. | Do not operate vehicle. The truss may need to be replaced. Seek professional advice. |
| Difficulty with link bracket mounting | Misalignment during installation, incorrect bracketry. | Re-evaluate alignment and bracket compatibility. Professional adjustment may be required. |
Note: Any structural damage to the truss or axle assembly should be addressed immediately by a qualified professional to ensure vehicle safety.
7. Specifications
| Attribute | Detail |
|---|---|
| Product Name | PRO SERIES AAM 9.25" Low Profile Truss |
| Brand | Barnes 4WD |
| Model Number | B4WK12687 |
| Material Thickness | ¼" and 3/16" steel plate |
| Item Weight | Approximately 28 pounds (12.7 kg) |
| Exterior Finish | Unfinished |
| Compatible Axle | AAM 9.25" front axle (2003-2013 Dodge 2500/3500 trucks) |
| ASIN | B0BFZ1W7T3 |
| Date First Available | September 20, 2022 |
8. Support and Warranty Information
For product support, technical inquiries, or questions regarding specific applications, please contact Barnes 4WD directly through their official channels. Contact information can typically be found on the manufacturer's website or through your point of purchase.
Specific warranty details for the PRO SERIES AAM 9.25" Low Profile Truss are not provided within this manual. Please refer to the manufacturer's official warranty policy, which is usually available on their website or included with the product packaging. It is advisable to retain your proof of purchase for any warranty claims.





