Remus Valved Non-Resonated Cat-Back Exhaust for BMW 5 Series M5 F90 (2018+) OPF/GPF Models - Quad 102mm Chrome Tips - Stainless Performance Catback - Fits M5 & M5 Competition S63 4.4 V8 - OEM Valve Control

Unlock the V8 soundtrack on your BMW M5 F90

Give your S63B44B twin‑turbo V8 the voice it deserves with this premium valve‑controlled sports exhaust. Built by Remus and engineered for OPF/GPF models, this non‑resonated cat‑back delivers a deeper, harder‑edged tone with the valves open and a more civilised note when closed, while improving gas flow and trimming weight.

Handmade in Austria from 100% stainless steel with a shot‑blasted finish, it features left and right sections and quad chrome outlets for a purposeful OEM+ look. The system works with the factory electronics, so you keep the original switchable valve functionality through your car’s drive modes.

• For BMW 5 Series F90 M5 2018 onwards, 441 kW S63B44B OPF/GPF vehicles
• Valve control retained via the original actuators and electronics
• Quad tailpipes Ø 102 mm, straight‑cut chrome finish
• Tube diameter 84 mm for freer breathing and reduced restriction
• 100% stainless steel construction, shot‑blasted surface
• Lightweight build with precision fitment
• Crafted by hand in Austria

Fitment and important notes

Only for vehicles equipped with a GPF/OPF. This system replaces the petrol particulate filter. The GPF/OPF must be deactivated via ECU mapping to prevent warning lights or engine management issues. In addition, the original BMW heat protection for tank, OE part number 51 48 8 060 077, must be used.

Why enthusiasts choose this upgrade

Expect a stronger, more purposeful exhaust note, improved throttle response feel from lower back pressure, and a premium finish that looks as good as it sounds. We have installed this system for customers and the feedback has been excellent, with owners praising the quality, the precision fit and the switchable character through the factory valve control.

Perfect for performance‑minded M5 owners

Whether you call it a BMW M5 F90 exhaust upgrade, M5 Competition valved exhaust, OPF/GPF delete cat‑back, quad exit performance system, or a stainless steel sports exhaust, this Remus setup is the go‑to choice for unlocking a more aggressive tone and enhanced flow on the S63 V8, while keeping everyday refinement when you want it.

Part number

089317 0000 + 089618 0500LR + 0446 70SG

Professional installation

For fitting, mapping and advice, we recommend booking with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.