Remus Valved Axle-Back Exhaust Rear Silencer/Back Box for BMW 540i 5 Series G30/G31 (B58/B58B30A) 2017-on | Quad 102mm Chrome Rolled Tips | OE Valve Control Sports Muffler Stainless Steel

Transform the soundtrack and response of your BMW 540i

Looking for a premium valved rear section for your BMW 5 Series that keeps factory flap control and delivers a richer, motorsport-inspired tone? This Remus performance back box set is a high-quality rear muffler upgrade for the B58-powered 540i, designed for G30 saloon and G31 touring models from 2017 onward.

Handmade in Austria from 100 percent stainless steel with a shot blasted finish, it pairs a deep, aggressive racing note with reduced backpressure for a genuine performance uplift. The quad 102 mm chrome rolled-edge tailpipes complete the look with a bold OEM-plus finish.

Part number: 088017 1500+0046 70S

Why choose this Remus rear section

• Aggressive racing sound that suits the B58 straight-six
• Retains factory valve control for drive-mode dependent sound
• Lower backpressure for improved flow and performance increase
• Lightweight construction compared to stock rear silencer
• Perfect fitment and premium build quality
• Shot blasted, 100 percent stainless steel for durability
• Handmade in Austria with meticulous attention to detail
• Quad 102 mm polished chrome rolled tips for a striking finish

Compatibility

BMW 5 Series 540i G30 G31 with the B58B30A engine, 2017 onward.

Important fitment note

The original rear diffuser from the BMW G30 550i must be used for correct tip clearance and integration.

Required OEM diffuser: BMW part no. 51 12 8 067 763

What our customers say

We have installed this system on multiple client cars and the feedback has been consistently positive. Owners love the deeper tone on start-up and the assertive character when the valves open, with the premium finish elevating the rear end.

Professional fitting

Want it installed by specialists who know BMW performance inside out? Choose MJ Modifications in Warwickshire for a seamless fit and finish. Request a fitting quote at info@mjmodifications.co.uk.

Common search terms

BMW 540i exhaust upgrade, BMW 5 Series G30 exhaust, G31 touring exhaust, B58 exhaust, valved backbox, rear muffler UK, sports exhaust BMW 540i, quad tailpipe system, chrome 102 mm tips, rolled-edge tailpipes, stainless steel back box, performance rear section, BMW 540i sound upgrade, BMW G30 G31 valved muffler, Remus Austria exhaust, BMW 540i rear silencer upgrade 2017 on.