Milltek Sport OPF/GPF-Back Race Rear/Axle-Back Cat-Back Style Exhaust, Burnt Blue GT90 Titanium Quad Tips for BMW M4 F82/F83 & M4 Competition (S55) 2019-2020 | Backbox Rear Silencer Delete Style | SSXBM1120

Performance Rear System with Burnt Blue GT90 Titanium Tailpipes for BMW M4 F82 F83 and M4 Competition OPF GPF 2019–2020 – Part No. SSXBM1120

Turn your S55-powered M4 into the car it should have been from the factory. This UK-built Milltek Sport rear section unlocks a sharper, race-bred soundtrack and a premium motorsport look thanks to the distinctive burnt blue 90 mm GT90 titanium outlets. Designed specifically for later OPF GPF M4 models, it delivers that addictive straight-six tone without the fluff. Part number: SSXBM1120.

Why enthusiasts choose this system

• Hand-finished in the UK from high-grade 304 stainless steel for long-term durability and excellent corrosion resistance.
• Precision mandrel bends maintain consistent internal diameter for smooth gas flow and a responsive feel.
• Race-focused acoustics with a crisp, purposeful note under load and well-controlled cabin character at a cruise.
• Eye-catching quad exit look with burnt titanium GT90 tips that perfectly suit the aggressive rear of the F82 F83.
• Engineered for OPF GPF cars only, ensuring the right fit on 2019–2020 M4 and M4 Competition models.

What you can expect

On idle the S55 settles into a deeper, richer burble. Press on and you get a clean, hard-edged tone with a motorsport vibe that builds through the revs. No artificial theatrics, just an authentic straight-six soundtrack that makes every drive feel special.

Built by a name you can trust

Milltek’s decades of experience show in the material choice, the weld quality and the consistency of the bends. It is a robust, UK-made performance system that looks as good as it sounds, with tailpipes that resist heat discolouration and keep their burnt blue finish.

Real-world feedback

We have installed this setup for BMW M4 owners and the response has been overwhelmingly positive: better character, smarter aesthetics and a more engaging drive. It is a go-to upgrade for F82 and F83 drivers who want a serious sound and premium finish.

Compatibility

• BMW M4 F82 Coupe with OPF GPF – 2019 to 2020
• BMW M4 F83 Convertible with OPF GPF – 2019 to 2020
• BMW M4 Competition with OPF GPF – 2019 to 2020
• OPF GPF models only. Not suitable for earlier non-filter cars.

Fitting and support

Professional installation available at MJ Modifications, Warwickshire. For a fitting quote, workshop availability or expert advice, email info@mjmodifications.co.uk.

Key details

• Brand: Milltek Sport
• Configuration: OPF GPF back race rear section
• Tailpipe style: Burnt Titanium GT90 quad exits
• Material: 304 stainless steel
• Part number: SSXBM1120

Search terms customers use

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