31352283515 = Front, E92 M3, coupe = 26.5mm per the internet and also as measured
33552283655 = Rear, ?, ?, ? = 22.5mm as measured
I thought 33552283655 was the Rear E92 M3 coupe, but perhaps not? Real OEM says that's what it's for. Also seeing that realoem has it listed as 22.5mm, which is correct:
http://www.realoem.com/bmw/showparts...11&hg=33&fg=45
I have the bars, bushings, brackets, etc. so I'm good on that. Just wondering what the heck I have. 'Cause it sure isn't 20mm like we always see posted and written over and over again.