Hi,
Fitting sport suspension sway bar to MCS part number 33506853919. 21mm hollow 39% more rigid than standard S. Can I use existing bushings, or do I need different ones. Thanks!

 

It will arrive with the bushings glued on. But if you're going through all the effort, I'd put on something bigger, at least the NM 22mm.

 

I second J_L
I would use the 23 mm from them, that was my gateway sway bar!!
https://www.vipcustomparts.com/F56%20parts%20page.htm

 

Thanks for the responses. J__L yup it has the bushing thanks! I want to skip aftermarket parts so going with the JCW bar, 21mm hollow, instead of NM 22mm solid Per minimania JCW is 39% stiffer compared to NM 63%. Just installed and can tell the difference. Still have Winter tires so will know more with stickier Pilot Sport AS late Spring. Install was pricy, at $800 book from dealer. They did for $600, bar for $222. On R series it is much cheaper. I want the MINI install and parts paper, as well as 2 year warranty. Thanks all again!

 

Book labor from MINI includes 4 wheel alignment.