Designed for the AAM American Axle found under Heavy Duty Dodges, the Carli Axle Truss is a crucial component for the avid off-roader that routinely puts their truck in extreme situations. The factory AAM axle is susceptible to bending from the forces encountered in normal or extraneous off-road activities, leaving the truck with a "smile" that leads to worn tires and steering components. At the heart of the Truss is an internal network of 1/4" thick x-bracing and reinforcement ribs that zig-zag down the length of the axle. Coupled with the axle tube saddles, Upper C Gussets, Lower C Doublers, and CNC manufactured plates, the Carli Fabricated Truss will keep your axle straight and intact for that next blast down a desert trail.
FITMENT
This Truss is NOT a direct fit item and will require skilled fitment and installation. Cutting and grinding will be required in the fitment process. This fits 2003-2012 Ram 2500/3500 4wd trucks.
INSTALLATION
This item requires installation by a trained professional. Welding is required to secure the truss to the axle. Knowledge of dissimilar metals: Cast, Forged, and CRS, is highly recommended.
INCLUSIONS
Included with every Fabricated truss are Upper C Gussets & Lower C Doublers to ensure no weakness of the factory Outter-C design is left unsupported.
Installation Instructions


AAM 9.25 axles are prone to bending under harsh off road conditions when the front axle sees high shock loads like hitting the bump stops at a high rate of speed. Thuren's weld in truss kit is made from the same 1.5”x.375” DOM tubing as their track bars and steering components providing plenty of strength and with bends in all the right spots to give you the most ground clearance possible. Thuren feels the open design of their truss puts less stress on the axle assembly during the welding process. This truss kit also includes plates for the control arm mounts. This kit does require cutting, grinding and welding and should be installed by an experienced welder.
These axle trusses fit 2003-2013 Ram 2500 trucks, and 2003-2012 Ram 3500 trucks.
Due to limited production, Thuren Fabrication items cannot be expedited. If expedited shipping is selected, we will credit back the shipping difference and ship via standard Ground shipping. Thank you for your understanding!
Weld-it-yourself(WIY) truss kit for the new 2013+ 3500 / 2014+ 2500 chassis. As truss kits go, this one is a VERY easy install. That said, it should still be installed by a very competent, professional welder.
- 1.5"x3/8" wall bent DOM main tube.
- Bent main tube for high-clearance
- CNC laser cut weld plates
- CNC mill shaped tube ends for minimal cutting/grinding/fitting.
- Simple upper-C weld in brace design, to avoid overheating the ball joint.
- Designed to strengthen the axle especially around the Center-Axle-Disconnect.
Due to limited production, Thuren Fabrication items cannot be expedited. If expedited shipping is selected, we will credit back the shipping difference and ship via standard Ground shipping. Thank you for your understanding!
If you run your Ram hard off road, a Carli axle truck is a must have. The factory axle is extremely easy to bend with a hard bottom out, and this is the solution to prevent that expensive mistake.
The axle on the 2014+ Ram 2500/3500 is a whole different animal from the previous generation. The large pumpkin, CAD bracket and outer C’s don’t make for an easy welding job. That said, we’ve designed a truss kit that runs a 1.75″ Diameter 0.120″ wall thickness tube that’s CNC Cut/Bent to match the knuckle profiles while skidding the pumpkin. Included with the truss kit are two 1″ OD stand-off tubes that bridge the distance from the truss tube to the main axle tube on the passenger’s side (long side) then plates to enclose the entire truss. Lastly, we include “Upper C” Gussets to plate the outer C upper to the bottom of the coil buckets.
This is the strongest truss kit on the market and requires SUBSTANTIAL fabrication knowledge/ability to install. There are no instructions; take it to a fabricator with extensive knowledge in welding differentiating metals.
SKU: CS-AAMTRUSS-14
– MASSIVE axle support ensures the axle stays true no matter the beating
– 1.75″ OD .0120″ Wall Main tube
– 1″ OD Main Tube Supports
– 0.250″ CNC Cut Finishing Plates
– WELD-ON Fabrication Part

