TL;DR - I am not happy with the lifespan I got out of the X-Axis joints on my SPC upper control arms (UCAs), so I'm going back to the original polyurethane bushing-based SPC UCAs.
14 CommentsTag: SPC upper control arms
September 1, 2022. Note: There is an important update below. It was more than three years and 120K miles ago that I installed SPC UCAs on the Tacoma. Shortly after installation, SPC came out with an improved design that was a single forged piece of material, with an entirely new type of joint. That joint - which they call the "X-Axis" joint - was essentially a sealed spherical bearing that replaces the polyurethane bushings where the UCA is mounted to the frame. And so, when I took the truck in for an alignment and the alignment tech (a good one,…
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Time for more new bushings.
TL;DR - Replacing my LCA bushings didn't resolve my squeaks. Time to start thinking about UCAs and rear leaf spring bushings.
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