BMW M4 (2020-2024) G82 Milltek Sport Catback

Milltek Sport OPF/GPF-Back with Centre Resonator Bypass – BMW M3 & M4 (G80, G81, G82, S58 3.0 Turbo)

Release the full voice of your S58 engine with Milltek's OPF/GPF-back system featuring a centre resonator bypass. Designed to sharpen the tone and improve flow without removing the factory particulate filters, this system enhances both performance and sound without compromising fitment.

🔧 Key Features

• Centre Resonator Bypass: Replaces the central resonator section to amplify exhaust tone, reduce restriction, and improve flow dynamics.

• OPF/GPF-Back Configuration: Retains factory gasoline particulate filters for emissions compliance (where applicable), while boosting acoustic feedback.

• Available in Resonated & Non-Resonated Variants: Tailor your setup for either a refined or aggressive exhaust profile, depending on your driving preferences.

🛠 Construction & Performance

• 76 mm (3") Mandrel-Bent T304L Stainless Steel: Ensures smooth airflow, consistent pipe diameter, and long-lasting durability.

• Improved Turbo Spool & Throttle Response: By reducing backpressure in the exhaust tract, engine response becomes sharper—especially in the mid-range.

• Bolt-On Installation: Engineered for precise fitment with factory mounting points. Some models may require cutting or tuning depending on vehicle setup.

🚘 Vehicle Compatibility

• BMW M3 G80 / G81 – Including Competition and xDrive variants

• BMW M4 G82 / G83 – Coupe and convertible models with S58 3.0L twin-turbo engine

• Compatible with models equipped with factory OPF/GPF systems

⚠️ Important Notes

• Not EC-Approved: This system is designed for off-road or motorsport use in regions with strict emissions regulations.

• Tuning or OPF Modules May Be Required: Depending on your region and vehicle spec, a tune or bypass module may be necessary to prevent warning lights or emissions errors.

• Installation May Involve Cutting: This system replaces a central section of the exhaust; professional installation is recommended.

🎯 Why Choose Milltek for Your M3 or M4?

• Crafted in the UK using motorsport-proven materials and engineering

• Modular sound options that cater to daily drivers or track enthusiasts

• Precision-built from premium stainless steel for long-term reliability

• Designed to integrate seamlessly with factory exhaust components