Milltek Sport GPF-Back Resonated Cat-Back Exhaust with Titanium GT-90 Tips for BMW M140i F20/F21 LCI (3 & 5 Door) OPF Models 2019-On

Turn up the character of your BMW M140i without compromise

Give your F20 or F21 facelift M140i the soundtrack it deserves with this UK-built Milltek OPF-back system featuring a silenced centre section and stunning 90 mm titanium GT90 tailpipe finishers. Designed specifically for OPF equipped 1 Series M140i hatchbacks from 2019 onwards, this rear section upgrade retains your factory particulate filter for hassle free road use while unleashing a richer, more purposeful tone.

Why owners choose this system

• Beautifully balanced sound, deeper and sportier under load with a calm, refined note when cruising
• OPF-back layout keeps the original GPF and catalysts in place for peace of mind
• Premium materials throughout, built in the UK from T304 grade stainless steel for long term durability
• Mandrel bent larger diameter tubing promotes smooth gas flow and sharp throttle response
• Eye catching titanium GT90 tailpipes, 90 mm diameter for an OEM plus motorsport look
• Direct bolt-on to factory mounting points on OPF models, no cutting of the particulate filter section

Crafted to perform

Milltek’s T304 non magnetic stainless construction resists corrosion and heat cycling, while precision bends maintain a constant radius for consistent flow. The resonated centre section tempers harshness and cabin boom, so you get a confident B58 soundtrack that is easy to live with every day.

Fitment and compatibility

• Vehicle: BMW M140i F20 and F21 LCI hatchback, 3 door and 5 door
• Years: 2019 onwards, facelift with OPF only
• Layout: OPF back rear system with centre silencer and twin titanium GT90 finishers
• Will not suit pre OPF cars

Real world feedback

We have installed and run this exact Milltek setup on customer M140i cars and feedback has been outstanding. Owners love the richer tone, the premium tailpipe finish, and the everyday friendliness on longer journeys.

Professional installation

Want it supplied and fitted by specialists? Book your car in with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored fitting quote and availability.

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