Trailing arm reinforcement

[SCOTI]

Originally Posted by indymachinist

I too stitch welded my trailing arms. I have heard you want to stick with the I-beam style (dont box them in, dont do tubular, etc) for best performance. The fact is these NEED to be able to flex. Its part of the design. You just don't want the 2 halves to separate.

The beam style works in factory form because they can twist (by design) & the front rubber bushings allow for some flex.

Stitch welds won't inhibit the ability to flex. Aftermarket 'tubular' arms offer increased rigidity but will bind sooner vs. factory arms unless some sort of different front bushing is used. That's why those that 'get it' build their T/A's w/some type of spherical joint up front for articulation.