• The muffler with quad-Tips is compatible with F10 M5 style quad diffuser
• RWD model only.
• Cat-Back system fit to stock catalytic converter, need the reducer (63mm–>3″) (1xBMF12-CR)
• Armytrix De-catted Down Pipe fit to stock cat-back system, need the reducer (3″–>63mm) (1XBMF12-DR)
• Fit to both Left-Hand Drive/Right-Hand Drive cars
• Armytrix OBDII Control Module required