
Milltek Cat-back - GPF Back - Resonated with Titanium GT-90 Trims - BMW M140i F20 and F21 LCI OPF - 2019 onwards
Upgrade your BMW M140i with the Milltek Sport GPF back resonated cat-back exhaust system with Titanium GT-90 trims. Perfect for OPF models only, this premium UK-made performance exhaust transforms sound and response while retaining the factory GPF for worry-free daily driving. Designed for the facelift M140i F20 and F21 LCI 3 door and 5 door from 2019 onwards, this is the must-have M140i exhaust upgrade for enthusiasts who want a deeper, sportier tone without drone.
Hand-crafted in the UK from aerospace grade type 304 non-magnetic stainless steel, every Milltek system is built to last. Mandrel-bent pipework and carefully optimised enlarged bore diameters deliver excellent gas flow and response, with a crisp, refined soundtrack from the resonated centre section. The Titanium GT-90 90 mm tailpipes finish the rear perfectly with a premium motorsport look.
- Vehicle fitment: BMW M140i 3 door F21 and 5 door F20 LCI - OPF models only - 2019 onwards
- Configuration: GPF back cat-back exhaust - resonated - Titanium GT-90 tailpipe trims
- Construction: UK made T304 stainless steel throughout - non-magnetic - corrosion resistant
- Sound: Sporty, deeper, crisper tone with a refined cruising note and no intrusive drone
- Design: Mandrel-bent for constant radius bends and optimised gas flow
- Fit: Direct fit to OE mounting points on OPF-equipped cars - keeps factory GPF and catalysts in place
- Finish: Premium Titanium GT-90 90 mm tips for an aggressive OEM plus appearance
Why choose this Milltek M140i exhaust
- Proven Milltek Sport quality - designed, developed and hand-finished in the UK
- Resonated system balances performance sound with daily comfort
- Engineered for flow and response without sacrificing mid-range torque
- Durable T304 stainless steel pipework, silencers and hardware
- Perfect for OPF models - GPF back layout retains emissions hardware
Real results you can feel and hear
We have installed and used this exact Milltek M140i GPF back resonated system and the feedback from Nforcd customers has been consistently excellent. Expect a noticeable improvement in sound quality and character, sharper response thanks to optimised gas flow, and a premium tailpipe finish that looks the part on any F20 or F21 LCI M140i.
Compatibility and notes
- Fits BMW M140i F20 and F21 LCI - 2019 onwards - OPF models only
- Will not fit pre-OPF cars
- Resonated version for a refined everyday setup
Professional fitting
Want it supplied and fitted by specialists We offer installation at Nforcd in Warwickshire. Email Sales@nforcd.com for a tailored fitting quote and availability.
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