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Milltek Resonated Secondary Cat Bypass | BMW G8X M3 M4
SKU: SSXBM1267
Parts
Documents
Description
The Milltek Axle Back Resonated Secondary Cat Bypass is engineered for BMW G8X M3 and M4 models. This system replaces the factory secondary catalyst with a resonated bypass pipe, designed to fit OE downpipes and Milltek Axle Back systems only. Direct factory fitment with OEM hangers — no modification required.
Constructed from T304L stainless steel with mandrel-bent piping, the resonated design is tuned to the G8X platform's natural resonance point, delivering a refined yet sportier exhaust character at full throttle while minimizing drone in cruise. Pipe diameter: 3.00" (76.2mm). Engineered to exhilarate without compromise.
Fitment
- BMW M3 G80 (2021–present)
- BMW M4 G82/G83 (2021–present)
- Requires OE or Milltek downpipes
- Compatible with Milltek Axle Back systems
Built in-house from raw material to finished component.
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Key Facts
| Pipe Diameter | 76.20 |
| 2 to 3 hours to fit (including removing OE system) | |
| Race Product | Yes |
| EMarked | No |
System Fitment List
Shipping Information
This system ships in 1 box.
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