Milltek Particulate Back Exhaust System for F66 MINI Cooper S. This is a new and much better sounding rear exhaust. The kit has the rear muffler and non resonated pipe to attach to the stock exhaust system behind the particulate OPF/GPF. You do have to cut the pipe on your MINI to install, but is is pretty simple.
This comes in several options. The base option just replaces the original system and has the downturn tips off the muffler to continue the stealth look. The other tip options include a new rear bumper diffuser trim panel and allow the exhaust to exit like the earlier generation MINIs and look super cool.