The F90 M5's factory resonator sits between the catalysts and rear muffler, and removing it is the most direct path to more volume and fuller tone from the S63. Dinan's resonator delete replaces the hydro-formed factory section with 80mm T304 stainless steel tubing and inserts a mandrel-bent X-pipe crossover where the resonator sat — promoting even flow distribution to both exhaust banks and eliminating tonal inconsistencies from uneven flow. Brushed stainless finish, bolt-on installation with included mounting hardware. Pairs naturally with the Dinan F90 M5 axleback for a full mid-to-rear system upgrade.
Features:
+ 3.25" (80mm) T304 stainless steel tubing — replaces hydro-formed factory resonator section
+ Mandrel-bent X-pipe crossover — even flow distribution, minimum restriction
+ Deletes resonator between catalyst and rear muffler
+ 100% 304 stainless steel, brushed finish, bolt-on with included hardware
+ BMW F90 M5 fitment (S63)
