Milltek Cat-back Exhaust - GPF OPF Back - Road - Cerakote Black GT-90 Trims - BMW M4 F82 F83 Coupe Convertible and M4 Competition - 2019 to 2020 - Part No. SSXBM1125
Transform the sound and character of your BMW M4 with the Milltek Cat-back GPF OPF Back Road system with Cerakote Black GT-90 trims. Designed specifically for OPF GPF-equipped BMW M4 F82 Coupe and F83 Convertible models, including the M4 Competition, 2019 to 2020. This Milltek Sport exhaust upgrade enhances performance potential and delivers a crisp, sporty exhaust note without unwanted drone or cabin resonance.
Why choose Milltek for your BMW M4 F82 F83
Every Milltek system is designed, developed and hand-finished in the UK by time-served craftsmen. Produced in aerospace grade type 304 non-magnetic stainless steel, the entire system from pipework to silencers and associated hardware is built to last and resist discolouration. Mandrel bending ensures constant radius bends for optimised gasflow, while carefully enlarged bore diameters are engineered to unlock performance potential without sacrificing mid-range torque. Each Milltek exhaust endures a comprehensive acoustic development process to deliver a tone that is sporty and crisp, without inducing NVH, drone or cabin resonance.
Key features
- Milltek Cat-back GPF OPF Back Road system with Cerakote Black GT-90 trims
- Hand-finished in the UK using aerospace grade type 304 non-magnetic stainless steel
- Mandrel bent pipework for optimised gasflow and carefully enlarged bore diameters
- Sporty, crisp exhaust tone tuned to avoid NVH, drone and cabin resonance
- Stealth OEM-plus look with Cerakote Black GT-90 tailpipe trims
- Engineered for OPF GPF models only
- Milltek quality, fit and finish throughout
- Part number: SSXBM1125
Compatibility
- BMW M4 F82 Coupe OPF GPF models - 2019 to 2020
- BMW M4 F83 Convertible OPF GPF models - 2019 to 2020
- BMW M4 Competition OPF GPF models - 2019 to 2020
- OPF GPF models only
Real-world feedback
We have installed this Milltek system at Nforcd and it has been consistently praised by our customers for its build quality and the refined, engaging sound it brings to the BMW M4. It is a highly popular exhaust upgrade for owners seeking a premium UK-made cat back that complements OPF GPF cars.
Fitting and support
Professional installation recommended. For expert fitting, book with Nforcd in Warwickshire. Request a fitting quote by emailing Sales@nforcd.com.
Search-friendly terms
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What you get with Milltek quality
A UK-engineered cat back designed to work with OPF GPF cars and built in type 304 stainless steel, with mandrel bends for optimised flow and a carefully tuned acoustic profile that avoids drone. Finished with Cerakote Black GT-90 tailpipe trims for a subtle, aggressive look that suits the M4’s lines.