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BMW M4 Competition I6 3
the ARM 335xi catless downpipes allows your AWD N54 to run boost settings of Stage 2 tunes and beyond
Note: If connecting to the OEM axle-back
Includes plugged 1/8″ NPT Water Injection Bungs
Direct bolt-on fitment for easy installation
MAD BMW F87 M2C S55 Single Midpipe Resonated W/ Brace b58 diffuser BMW M4 Competition I6 3MAD (Mastery of Art and Design) BMW F87 M2C S55 Single Midpipe Resonated With Brace ETA Feb. 2026 The MAD resonated single midpipe for the F87 M2 Competition is designed to smooth out the S55s exhaust tone while reducing rasp and improving overall sound quality. This setup replaces the factory dual midpipe with a more direct single pipe design, giving the car a deeper and cleaner tone without making it overly loud. The resonated version adds a built
