REMUS Valved Axle-Back Exhaust / Rear Silencer with Quad 102mm Carbon Fibre Tips for BMW 540i G30/G31 (Saloon/Touring) xDrive B58B30A 2017+ – OE Valve Control, Stainless Performance Muffler, Titanium-Lined Tips

Transform the soundtrack and look of your BMW 540i G30 G31 with a premium valved axle-back upgrade

Unlock a richer, motorsport-inspired note and sharpened response on your BMW 5 Series with this REMUS rear section. It retains factory valve operation for true everyday usability, then opens up for a bolder tone when you want it. Finished with four 102 mm carbon fibre, slash-cut outlets with titanium liners, it is a serious visual and acoustic upgrade for the B58-powered 540i.

• Compatible with BMW 5 Series G30 Saloon and G31 Touring 540i xDrive B58B30A from 2017 onwards
• Valve-equipped design integrates with the car’s original actuators and driving modes
• Fully stainless construction with a durable bead-blasted finish
• Flow-optimised internals for reduced restriction and improved performance feel
• Noticeable weight saving compared with the stock back box
• Precision build quality from Austria with a direct-fit installation using factory mounting points
• Quad 102 mm carbon fibre tips with titanium inner sleeves for a premium OEM-plus look

Part number: 088017 1500+0046 70CS

Important fitment note: For the quad outlet finishers you must use the BMW G30 550i lower diffuser insert. BMW part number 51 12 8 067 763.

Why enthusiasts choose this upgrade

Our team has fitted this system to multiple customer cars and our own builds at MJ Modifications. Feedback is consistently positive for the deep, refined sound in comfort settings and the assertive character when the valves open. The precision fit and premium materials make it a long-term, high-value upgrade that complements the 540i’s B58 engine perfectly.

Professional installation

Prefer expert fitting. Book in with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored installation quote.

Search-friendly details

BMW 540i G30 performance back box, G31 Touring sports system, B58 sound upgrade, valved axle-back, quad tip carbon fibre tailpipes 102mm, titanium-lined tips, BMW 5 Series xDrive muffler upgrade, premium stainless rear section, Austrian-built performance system, direct-fit rear section for 540i B58B30A, UK performance parts supplier.