Milltek Non-Resonated Primary Catback Exhaust For G01 BMW X3M/X3M Comp (LCI S58)

Milltek 80mm Cat Back Non-Resonated Downpipe Back Exhaust system for BMW X3 G01 with S58 engine. Direct replacement for the OEM system, delivering a more aggressive tone and increased volume across the full throttle range. Hand-finished T304L stainless steel construction with mandrel-bent piping and polished twin outlets.

This system removes the OEM resonance chambers, amplifying engine character while maintaining street-legal compliance. Engineered for dyno-proven power gains and precise acoustic tuning. Uses OEM hangers and mounting points-no modification required. Designed to exhilarate with a signature Milltek tone that evolves with engine RPM, not constant drone.

Fitment:

• BMW X3 G01 (2018-present) with S58 engine
• Direct factory fitment
• OEM valve compatibility maintained
• Requires Stage 2 ECU Remap

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.