Remus Valve-Controlled Performance Exhaust Back Box/Muffler Rear Silencer (Axle-Back), Stainless Steel, Twin 84mm Tips, EU E-Marked Type Approved - BMW 3 Series 340i F30/F31 LCI 2015+, B58 3.0T, Non-OPF/GPF, Saloon & Touring

Remus Valve-Controlled Sports Back Box for BMW 340i F30/F31 LCI (2015+), Twin 84 mm Outlets, EU Type Approved

Give your B58-powered BMW 340i the soundtrack it deserves with this premium rear section from Remus. Handcrafted in Austria from high-grade stainless steel with a shot-blasted finish, this valve-controlled rear box delivers a deeper, more purposeful tone when you want it and refined manners when you don’t. It integrates seamlessly with the factory flap motor and electronics, offering quiet and sporty modes at the touch of a button while improving flow thanks to a freer‑breathing, straight‑through layout.

Why enthusiasts choose this upgrade

• Valve-controlled sound: retains OE electronics for comfort and sport sound profiles
• Twin 84 mm outlets for a clean, factory-plus look
• Stainless steel construction with shot‑peened finish for durability and corrosion resistance
• Reduced exhaust gas pressure for improved response and performance feel
• Lighter than stock rear section
• Precision fitment for F30 Saloon and F31 Touring LCI models
• EU type-approved and road-legal in the UK
• Handmade in Austria with exceptional build quality

Tailpipe finishes (84 mm)

• Straight, carbon insert
• Angled Carbon Race with carbon ring
• Straight Black Chrome with carbon insert
• Angled carbon with titanium internals

Compatibility

• BMW 3 Series F30 (Saloon) and F31 (Touring) LCI facelift
• 340i, B58 3.0 turbo, 240 kW
• Model years 2015 onwards
• For vehicles without a gasoline/otto particulate filter (non‑GPF/OPF)

What you can expect

A richer, more characterful tone on throttle with a subtle, civilised note for daily driving. Better flow from the straight‑through internals helps the six‑cylinder breathe, while the dual 84 mm outlets and premium tip options elevate the rear end aesthetic. We’ve supplied and installed these systems for many 340i owners, and feedback on sound, quality and fitment has been consistently excellent.

Fitting and support

Professional installation recommended. Book fitting with MJ Modifications in Warwickshire and request a quote at info@mjmodifications.co.uk.

Search terms customers use

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