Sorry to revive this thread but just to confirm all I need for my OG F87 M2 LCI is the E90 Slave cylinder: P/N = 21526785964?
It would seem that this part is shared within many other BMWs:
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2016 F82 ///M4 Competition | Individual Mexico Blue - Fully loaded, CCBs, MPE ect.
Gone: '18 M2 LCI Manual, '02 E46 M3 SMG, '05 E46 M3 Manual