Overview
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.
Details
Fitment:
- BMW X3 G01 (2018-present) with S58 engine
- Direct factory fitment
- OEM valve compatibility maintained
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
