Nah I don't see how it would be. The subframe mounts are in a different part of the chassis. The swaybars only have issue with the mounting tabs of the bracket but don't pull on the subframe mounts at all.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFOLD MIRRORS - CSL TRUNK - CSL DIFFUSER - AA SPORT TUNE - AA PULLEYS - BILSTEIN PSS9s - AS 40% SSK
CF CSL RACE LIP - NAVI - BMW PERF CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC SS BRKLINES, TRANS MNTS, RTABs - 4.10 M-SPORT DIFF