I have the BMR parts which do the same thing, albeit heavier but also less expensive. I would have bought these instead if I’d known.
After 7 good track days, I still need some realignment after a track weekend or 2. The parts don’t move they are locked in place and the jam nuts are not coming loose.
I asked my shop in LA about this, JMP Autowerkz, who specialize in BMW track cars. They’ve installed the same spherical parts on many makes/models and say these do not prevent need for realignment. I was a little disappointed and worried maybe I was bending stuff, they said it’s normal and no issue getting car back to desired spec so no bent parts.
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