There's a handful of threads on sway bars that are pros/cons. I'm still torn on if I want to do it. From what I can tell the details are:

Eibach front/rear sway bar (PN: BME40200090111)

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2010 E93 M3 - Le Mans Blue
2010 E70 X5M - Alpine White
2016 F15 40e - Imperial Blue