Milltek Cat-back Exhaust - GPF/OPF Back - Road - Polished GT-90 Trims for BMW M4 F82 Coupe, F83 Convertible and M4 Competition - 2019 to 2020 - Part No: SSXBM1126
Upgrade your BMW M4 sound and response with the Milltek GPF/OPF-back cat-back exhaust system, part number SSXBM1126. Designed specifically for OPF and GPF equipped BMW M4 F82 Coupe, F83 Convertible and M4 Competition models from 2019 to 2020, this Milltek Sport exhaust delivers a deeper, crisper, more engaging tone on the road while retaining day-to-day refinement. Finished with stunning Polished GT-90 tailpipe trims for a clean OEM-plus look.
Every Milltek system is designed, developed and hand-finished in the UK using aerospace grade type 304, non-magnetic stainless steel. Precision mandrel bends maintain constant diameters for optimised gas flow, and carefully selected bore sizes are engineered to enhance performance without sacrificing mid-range torque. Each system undergoes comprehensive acoustic development to achieve a sporty, refined soundtrack with no unwanted NVH, drone or cabin resonance.
Key features
- Application: BMW M4 F82 Coupe, F83 Convertible and M4 Competition, OPF/GPF models only, 2019 to 2020
- Configuration: GPF/OPF-back cat-back exhaust - Road version for balanced sound and comfort
- Tailpipes: Polished GT-90 trims for a premium, factory-plus appearance
- Material: T304 stainless steel throughout for durability and corrosion resistance
- Manufactured in the UK by Milltek Sport - hand-finished to exacting standards
- Mandrel-bent tubing for optimised gas flow and response
- Sporty, crisp tone engineered to avoid drone and intrusive cabin resonance
- Direct upgrade for OPF/GPF-equipped M4 models - retains factory emissions hardware
- Part number: SSXBM1126
Why choose this Milltek BMW M4 exhaust
This Milltek catback transforms the M4’s character with a richer, more authentic straight-six soundtrack and enhanced presence, especially under load and in sport modes. The Road specification strikes the ideal balance for daily driving, motorway cruising and weekend blasts. The Polished GT-90 tailpipes fill the rear valance perfectly and complement both standard and Competition models.
Fitment and compatibility
- BMW M4 F82 Coupe - OPF/GPF models only - 2019 to 2020
- BMW M4 F83 Convertible - OPF/GPF models only - 2019 to 2020
- BMW M4 Competition (F82/F83) - OPF/GPF models only - 2019 to 2020
- Does not fit earlier non-OPF/GPF cars
- Milltek part number: SSXBM1126
Trusted by Nforcd and our customers
We have installed and used this Milltek M4 exhaust on customer cars and feedback has been consistently positive. Owners love the refined cold start, the improved tone under acceleration and the high-quality finish that stands up to UK road conditions.
Professional installation
For fitting, we recommend Nforcd in Warwickshire. Contact us for a tailored installation quote: Sales@nforcd.com.
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