Milltek Sport Axle-Back/Rear Section Exhaust System for BMW 1 Series M140i F20/F21 LCI (2015-2019) RWD Non-xDrive | GPF/OPF/PPF-Back Back Box/Rear Silencer Upgrade | B58 66.5mm Performance Sports Exhaust | UK-Made

Milltek rear section upgrade for BMW M140i F20 F21 LCI PPF models

Give your B58-powered M140i the voice it deserves. This Milltek rear section replaces the pipework and silencers from the petrol particulate filter backwards, unlocking a deeper, sportier tone while retaining the factory PPF/OPF. It is a direct-fit solution for facelift F20 and F21 1 Series M140i rear wheel drive models, built in Britain with the precision and sound quality enthusiasts expect.

Why enthusiasts choose this system

• Engineered specifically for PPF-equipped M140i to restore character and presence from the rear of the car.
• Refined sound in daily driving with a richer note under load for genuine hot hatch excitement.
• Precision construction and excellent fitment from a leading UK manufacturer.
• Proven in our workshop and by our customers – consistently praised for tone, finish and ease of installation.

Key details

• Configuration: particulate filter back rear section for BMW M140i F20/F21 LCI.
• Maintains the factory GPF/OPF while enhancing exhaust character.
• Pipe diameter: 66.5 mm (2.635").
• British built quality for long-lasting performance.

Compatibility

• BMW 1 Series M140i, facelift F20 and F21, 2015 onwards.
• Rear wheel drive models only – not suitable for xDrive.
• For vehicles equipped with a petrol particulate filter (GPF/OPF).

Real-world feedback

Fitted and evaluated by our team, this rear section delivers a deeper, more engaging soundtrack without compromising everyday usability. Owners consistently report a noticeable uplift in tone and quality, along with a straightforward installation and a premium finish.

Professional fitting

Want it installed by specialists who know these cars? Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Pre-dispatch compatibility check

We verify vehicle compatibility before shipping. Please provide your UK registration number or the last 7 digits of your VIN at checkout.

Brand

Milltek Sport.

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