Introducing the Milltek Sport BMW G80 M3 G82 M4 Axle Back / Cat Back Exhaust System, designed to deliver significant power gains, an impressive sound, and an aggressive appearance for your BMW.

By default, the Milltek system is configured as an Axle Back Exhaust System. However, with the addition of an OPF/GPF Bypass Mid Section, it can be transformed into a full Cat Back Exhaust System.

Constructed using the finest type-304 aircraft-grade stainless steel, this exhaust system offers a substantial weight reduction compared to the factory exhaust. The Milltek upgrade significantly decreases back pressure, enhancing throttle response without sacrificing low-end torque. The mandrel bending technique used in the pipework ensures full flow bends for improved gas flow, while the increased bore diameter guarantees optimal performance.

The resonated OPF/GPF Bypass Mid Section option provides a quieter and slightly more restrictive sound compared to the non-resonated variant, allowing you to choose the desired level of loudness for your vehicle. If you're interested in purchasing a resonated or non-resonated OPF/GPF Bypass Mid Section separately, we also offer these options.

Proudly designed and manufactured in the UK, the Milltek Sport BMW G80 M3 G82 M4 Axle Back / Cat Back Exhaust System is the ultimate upgrade for those seeking enhanced performance and a distinctive sound for their BMW.

- LH Valved Link & Outlet Pipe - MSBM355
- Adaptors to OE GPF/OPF - MSBM326
- RH Valved Link & Outlet Pipe - MSBM356
- Milltek Rear Silencer/Backbox - MSBM357

Compatible models

•  BMW G80 M3 Saloon (2021+)
• - BMW G80 M3 Competition Saloon (2021+)
• - BMW G81 M3 Touring (2023+)
• - BMW G81 M3 Competition Touring (2023+)
• - BMW G82 M4 Coupe (2021+)
• - BMW G82 M4 Competition Coupe (2021+)
• - BMW G83 M4 Convertible (2021+)
• - BMW G83 M4 Competition Convertible (2021+)+)
• GPF-equipped models ONLY