Milltek Sport Cat-Back Exhaust System with OPF/GPF Bypass, Brushed Titanium GT-100 Tips, T304 Stainless Steel for BMW M5 F90 & M5 Competition 4.4 Twin-Turbo V8 (2020-on) Stage 2 ECU Required

Performance Rear Exhaust Upgrade for BMW F90 M5 and M5 Competition 2020 onwards with OPF delete and Brushed Titanium 100 mm Tailpipes

Unlock the V8 soundtrack your F90 deserves with this UK engineered Milltek Sport catback rear section. Built from premium T304 stainless steel with precision mandrel bent pipework and finished with stunning brushed titanium GT-100 tailpipe finishers, this system replaces the rear factory pipework and bypasses the OPF GPF to let the S63 twin turbo engine breathe and sound like it should.

If you want a serious sound upgrade, a sharper throttle feel and an OEM plus look that fills the rear valance properly, this is the go to choice for BMW F90 owners. We have installed this system on multiple customer cars and the feedback is consistently excellent. Deep, mature tone outside, refined in cabin with no annoying drone at motorway speeds, and a quality fit that just works.

Why enthusiasts choose this setup

• UK made T304 aircraft grade stainless steel for durability and corrosion resistance
• Mandrel bent larger bore pipework for smooth gas flow and response
• OPF GPF bypass sections to release volume and character on particulate filter cars
• Brushed titanium 100 mm GT style tips for a premium motorsport inspired finish
• Beautiful welds and precise jig built fitment for straightforward installation
• Developed acoustic profile that is engaging under load and civilised on cruise

Compatible vehicles

• BMW M5 F90 4.4 S63 V8 2020 onwards with OPF GPF
• BMW M5 Competition F90 4.4 S63 V8 2020 onwards with OPF GPF

Real world feedback

Our team has fitted this catback on F90 saloons and the transformation is exactly what owners want from a performance exhaust upgrade. Customers comment on the richer tone, the enhanced presence on throttle, and the high end finish of the brushed titanium tailpipes. It delivers the sound and style without the headaches.

Important software note

Stage 2 ECU calibration is required when running the OPF GPF bypass on these 2020 onwards models. This is essential for correct operation after removing the particulate filter restriction.

Installation and support

For expert fitting, choose MJ Modifications in Warwickshire. We offer supply and install services with care for your M car. Request a quote at info@mjmodifications.co.uk.

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