DIY repair · Jeep Wrangler JK Unlimited

Truss a front axle before it bends (or after)

DIFFICULTY 4 / 5TIME ≈ A weekend with weldingCOST Truss kit plus welding; a bent housing needs replacing, not trussing

Symptoms

Toe that won't stay in alignment, inside-edge tire wear, or a visibly bent tube after a hard hit. It's common on lifted trucks running 35s and up on the factory axle.

The fix, step by step

  1. Driving Line says the small tubes and C-ends on both the Dana 30 and the Rubicon's Dana 44 can bend with oversized tires, and points to EVO Manufacturing trusses as a preventive fix.
  2. Check the housing is straight first, because a truss locks in whatever shape it has.
  3. Strip the axle (or at least remove the brackets that are in the way), grind the tubes clean, tack the truss in place, then weld in short alternating stitches to limit heat distortion.
  4. Paint it and re-check the alignment.
  5. If the housing is already bent, Dynatrac and Currie sell replacement housings.

Tools & part numbers

  • MIG or stick welder
  • grinder
  • straightedge or axle-alignment check
  • paint.

Where to buy the parts

JCR Offroad JKF-TRUSS-D30 front Dana 30 axle truss, JKQuadratec ↗Amazon ↗
JCR Offroad JKF-TRUSS-44 front Dana 44 axle truss, JKQuadratec ↗Amazon ↗
Rough Country 10565 Dana 30 truss and gusset kit, JKQuadratec ↗Amazon ↗
EVO Manufacturing (trusses and armor)EVO Manufacturing ↗Amazon ↗

Hunting a used or discontinued part? Search eBay Motors for Jeep Wrangler JK Unlimited parts →

Before you start

Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.

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