For a 2015 xkr. ..

Does anyone know the rubber boot size for the front lower ball joint? Or a place to source them? Thanks in advance and looking for an answer soon if someone can help please.

 

If you are referring to the LOWER front control arm, how many miles on your car? Wouldn't it pay to change the entire lower arm itself rather than taking it apart to just change the boot? The upper control arm is a different story as it is an easy boot replacement.

 

28,000 miles and I’m actually taking it off because I am putting lowering springs on it and power flex bushings. The arm is fine. It’s just the boot has a split in it.

 

Is it the upper control arm that has a split boot? Or are you just redoing your front end because you are lowering? I know the front lower control arms have issues with the bushings. I had my front upper control arm boots replaced a few weeks ago,(kept original control arms) and the front lower control arms are fine. I'm doing my rear upper control arm boots tomorrow. It's amazing that even when they changed those original silicone crappy boots to the black ones which you should have, they also didn't last. BTW....My 2010 has 22,000 miles and every boot is perished. I'm replacing the ball joint boots that can be gotten to without replacing the entire arms. I'm also replacing the rear sway bar links (Lemforder). Good luck with your project!

 

There quite a few threads on here that give the boot sizes. I had them written down somewhere, but can’t find them.
Will edit if I do.