Remus Valved Cat-Back / Catback Exhaust for BMW 5 Series G30/G31 540i xDrive (2017+) - Non-Resonated Performance Sport Exhaust, OE Valve/Flap Control, Quad 102mm Angled Rolled Chrome Tips - B58 B58B30A Saloon/Sedan & Touring/Wagon - Stainless Steel

Premium valved cat-back for BMW 5 Series 540i xDrive G30 G31

Unlock a deeper, motorsport-inspired tone and sharper throttle response on your B58-powered 5 Series with this high quality Austrian-crafted cat-back. It integrates seamlessly with the factory flap control so you keep quiet, refined driving when you want it and a raucous, free-flowing soundtrack when you open the valves. Quad 102 mm angle-cut, rolled-edge chrome outlets complete the look for a purposeful OEM-plus finish.

Why enthusiasts choose this upgrade

• Valve control retained through the original BMW electronics for true active sound
• Bead-blasted stainless construction for durability and a premium appearance
• Reduced backpressure for improved engine efficiency and response
• Lighter than the factory exhaust to help with overall performance
• Precision fit on the G30 and G31 chassis for a hassle-free install
• Crafted in Austria with exceptional build quality
• 102 mm chrome rolled tips fill the diffuser beautifully for a factory-plus aesthetic

Real-world results

We have installed this system on multiple customer 540i builds and the feedback has been outstanding. With the flaps shut it is civilised on motorway cruises, and with the valves open it delivers a rich, sporty note that lets the B58 sing without drone. It looks the part and sounds even better.

Compatibility

BMW 5 Series 540i xDrive, G30 saloon and G31 touring, B58B30A, 2017 onwards. Designed for cars using the standard valve motors and controls.

Important fitment note

Requires the BMW G30 550i rear diffuser to complete the installation. BMW original part number: 51 12 8 067 763.

Part number

088017 0000 + 088017 1500 + 0046 70S

Installation at MJ Modifications

Professional fitting available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and booking.

Common search terms

BMW 540i exhaust upgrade, G30 G31 540i cat-back, B58 valved exhaust, 540i xDrive sports exhaust, BMW 5 Series quad tip exhaust, 102mm chrome tips, angle cut rolled tips, factory valve control exhaust, performance exhaust system for BMW 540i, Austrian made exhaust for B58.