Milltek OPF/GPF Back System with GT-115 Cerakote Black Trims for BMW M135i xDrive F40 2019 on
Transform the sound and presence of your BMW M135i xDrive 5 Door F40 with this Milltek OPF/GPF-back exhaust system featuring GT-115 Cerakote Black tailpipe trims. This performance exhaust upgrade for the BMW M135i F40 is engineered in the UK from premium type 304 non-magnetic stainless steel to deliver a deeper, sportier exhaust note without drone, improved gas flow and exceptional longevity.
Built by time-served craftsmen, every Milltek Sport system is designed, developed and hand-finished in the UK. Mandrel-bent pipework maintains a constant radius for optimised gas flow, while carefully enlarged bore diameters over stock help unlock performance without sacrificing mid-range torque. Extensive acoustic development ensures a crisp, sporty tone without NVH, drone or unwanted cabin resonance.
Key features
- Fitment: BMW M135i xDrive 5 Door F40 2019 on with OPF/GPF
- Configuration: OPF/GPF-back system that replaces the exhaust section after the factory particulate filters
- Tailpipes: GT-115 Cerakote Black trims for a stealth, motorsport-inspired finish
- Material: Aerospace-grade type 304 non-magnetic stainless steel for durability and corrosion resistance
- Mandrel-bent pipework for smooth, unrestricted gas flow
- Enlarged bore over OEM to support performance without loss of mid-range torque
- Comprehensive acoustic tuning for a refined, sporty sound without drone
- Designed, developed and hand-finished in the UK
Why this exhaust is the ideal BMW M135i F40 upgrade
If you are searching for a BMW M135i exhaust, BMW M135i F40 exhaust upgrade, M135i xDrive performance exhaust, BMW M135i OPF GPF back exhaust or GT-115 Cerakote Black tailpipes, this Milltek system is the perfect choice. It enhances sound quality and character, sharpens throttle response feel through improved flow and elevates the rear-end styling with premium Cerakote Black trims that stand up to heat and daily use.
Our team at Nforcd has fitted and driven this setup, and customer feedback has been consistently positive on the fit and finish, refined tone and quality materials. It is a top-tier BMW M135i F40 exhaust upgrade for drivers who want a deeper soundtrack without harshness on the motorway.
Fitting and support
Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote or to discuss compatibility for your BMW M135i xDrive F40 OPF/GPF-equipped vehicle, email Sales@nforcd.com.
Compatibility note
For BMW M135i xDrive 5 Door F40 models from 2019 onwards that are OPF/GPF equipped. If you are unsure whether your car is OPF/GPF equipped, contact us for guidance.
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