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I think I want PU, unless that is not a good option for these cars? Loved them on my ZX. Do not want solid for sure and I figured rubber would fail again sooner or later?
I was looking at the 2 piece ones that you lube in between, but could not find a lot of info good or bad on them really.
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2015 X5 XDrive 35i - 2004 Z4 3.0 Sport
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