None of those items are REQUIRED! Exhaust, depending on the kit could be required....most certainly recommended to get the full potential of the kit.
Brakes, suspension, clutch.....No.
2012 MR e92 M3 DCT, fully loaded... ESS VT2-625
, Akra/Challenge Sport, KW Sleeve, OEM GTS rims, Volk TE37 SLs, Full OEM CF Interior
2008 e92 M3 Coupe 6MT | AW/BLK Extended...SOLD!