Milltek Cat-back Exhaust - GPF/OPF Back - Race with Carbon Jet-90 Trims for BMW M4 F82 F83 and M4 Competition 2019 to 2020
Transform your BMW M4 with the Milltek GPF/OPF Back Race cat-back exhaust. This UK-made performance exhaust system unleashes a sharper, more aggressive M4 soundtrack while maintaining refinement and no unwanted cabin drone. Precision engineered for OPF and GPF-equipped models, it delivers optimised gas flow and stunning Carbon Jet-90 tips that perfectly complement the F82 and F83 M4 styling.
Part Number: SSXBM1121
Why choose Milltek for your BMW M4 exhaust upgrade
- Designed, developed and hand-finished in the UK for BMW M4 F82 Coupe, F83 Convertible and M4 Competition OPF/GPF models 2019 to 2020.
- Aerospace grade type 304 non-magnetic stainless steel throughout pipework and silencers for exceptional strength, corrosion resistance and longevity.
- Mandrel-bent tubing for constant-radius bends and superior gas flow.
- Carefully enlarged bore diameters over stock to enhance performance without sacrificing mid-range torque.
- Comprehensive acoustic development for a crisp, sporty tone with Milltek Race character and without NVH, drone or unwanted resonance.
- Premium Carbon Jet-90 tips for a motorsport-inspired finish and OEM-plus look.
Fitment and configuration
- Vehicle compatibility: BMW M4 F82 Coupe, BMW M4 F83 Convertible and BMW M4 Competition with OPF/GPF only, model years 2019 to 2020.
- System type: Cat-back GPF/OPF Back Race performance exhaust.
- Tailpipe finish: Carbon Jet-90 trims.
- Part number: SSXBM1121.
Real-world results you can feel and hear
We have fitted and run this system on customer M4s and the feedback is consistently positive. Expect a deeper idle, sharper upshift cracks and an engaging, motorsport-inspired note under load, all delivered with Milltek’s trademark refinement on the motorway. It is the ideal BMW M4 exhaust upgrade for drivers who want a high-quality UK-made performance exhaust that looks, fits and sounds right.
Key search terms this product covers
BMW M4 exhaust, BMW M4 F82 exhaust, BMW M4 F83 exhaust, M4 Competition exhaust, M4 cat back exhaust, Milltek M4 exhaust, Milltek cat-back, GPF back exhaust, OPF back exhaust, Race exhaust, Carbon Jet-90 tips, carbon exhaust tips, stainless steel exhaust, UK made performance exhaust, SSXBM1121.
Professional installation
For fitting, we recommend Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Choose Milltek for your BMW M4 and enjoy a premium UK-built cat-back exhaust that elevates sound, flow and style while keeping everyday refinement intact.