MilltekResonated Secondary Cat BypassFitment: BMW G8X M3 M4
Resonated Secondary Cat Bypass | BMW G8X M3 M4 | Milltek
SKU: SSXBM1267
Regular price
$1,254.20
Sale price
$1,254.20
Regular price
$1,475.53
Unit price
per
- Fully secure checkout
- Trusted
- Rated and reviewed
Overview
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.
Details
Fitment Notes
- 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.
Fitment
| Years | Make | Model | Engine Family | Engine | Trim |
|---|---|---|---|---|---|
| 2021-2024 | BMW | M3 (G80) | S58 | 3.0TT | All |
| 2021-2024 | BMW | M4 (G82) | S58 | 3.0TT | Coupe |