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Milltek Sport BMW X3M/X3M Competition S58 Downpipe Back Exhaust System completely transforms the X3M's driving experience with enhanced sound and a noticeable performance gain. The system bypasses the factory OPF filters for increased airflow and reduced back pressure. Please note: This system will require a stage 2 ECU software or OPF cables.
Choose between a resonated system and a non-resonated system along with a wide range of tip styles. The resonated system is quieter than the non-resonated system - sometimes preferable for daily driving. The non-resonated system will have the best performance gains.
Designed and manufactured in the UK!
MSBM381REP: Non-Resonated OPF/GPF Bypass
MSBM382: Centre Section
MSBM383: LH Connecting Pipe
MSBM384: RH Connecting Pipe
MSBM385: LH Valved Link Pipe MSBM386: RH Valved Link Pipe
MSBM387: Rear Silencer
MSBM388 x2: Inner Tailpipes
MSBM389 x2: Outer Tailpipes
+ Your chosen exhaust tips
- High-quality type-304 aircraft-grade stainless steel
- Precision, quality-controlled manufacture to ISO 9001 standards
- Substantial weight saving over original equipment exhaust systems
- Reduces back pressure
- Sharper throttle response
- Designed & manufactured in the UK
*Only fits pre-facelift (pre-LCI) vehicles.
- BMW G01 X3M SUV (2019+)
- BMW G01 X3M Competition SUV (2019+)