AAM 11.5 Rear Axle Truss for 3.5" Tube

The Artec AAM 11.5 Rear Truss reinforces the American Axle 11.5" rear end — the factory one-ton axle under 2001-up GM 2500/3500 and 2003-up Ram 2500/3500 diesels — for life beyond what the factory imagined. Forty-inch tires, hard landings, and locked diffs put twisting loads into even these stout tubes; this full-width truss ties both tubes and the centered differential into one rigid structure, spanning roughly 53" across the housing. Its 3/8" steel top runs low-profile and flat, so it doubles as the mounting deck for upper links on a custom 3-link or 4-link. This version is cut for 3.5" diameter axle tubes.

Features

• 3/8" mild steel truss top with interlocked 1/4" mild steel gussets
• Full-width span of approximately 53" reinforces the entire housing
• Cut for AAM 11.5 housings with 3.5" axle tubes and a centered differential
• Low profile places upper-link joints about 9" from the axle centerline
• Flat deck ready for upper-link brackets on a linked build
• Self-jigging interlocked gussets simplify alignment and welding
• Precision CNC cut and bent to wrap the housing closely

Measure before you order: this truss requires the 11.5" AAM with 3.5" tubes — it does not fit the 10.5" AAM or Dana 70, and 4.0"-tube housings need clearance grinding. Installation is weld-on: strip the axle, preheat to around 400 degrees, and stitch weld in alternating sections to keep the housing straight, then paint or powder coat the bare steel. Finish the link side with Truss Upper Link Mounts, compare the Dana 80 Rear Truss and Sterling 10.25 Rear Truss for other one-ton housings, or browse all axle reinforcements.