Remus Valved Axle-Back Exhaust Rear Silencer/Back Box for BMW M4 Competition F82 LCI Coupe (2016-2018, 331kW) - Quad 102mm Tips - Stainless Steel ECE Approved - Non-OPF/GPF - Muffler Upgrade, Quad Exit Sports Exhaust

Valved Rear Back Box Upgrade for BMW M4 F82 LCI 2016 to 2018

Transform your M4 with this premium Austrian-built rear section featuring integrated valve control and quad 102 mm tailpipes. This axle-back sports exhaust replaces the factory rear silencer to deliver an aggressive performance note, improved flow and a precision fit to the original mounting points. It works with the car’s factory valve system, so you keep your drive mode functionality and everyday refinement when you want it.

We have installed this system on customer cars and feedback has been universally positive. Deep tone when cruising, crisp bark under load and a proper motorsport character when the valves open. If you are searching for a BMW M4 exhaust upgrade that looks right, sounds right and performs, this is the one.

Why choose this system

• Valve-controlled design using the original electronic valve control for seamless operation
• Aggressive racing sound with refined cabin manners when valves are closed
• Shot-blasted, 100 percent stainless steel construction for strength and longevity
• Low back pressure for improved response and performance potential
• Lightweight build compared with the OE rear box
• Handmade in Austria with exceptional craftsmanship and perfect fitment
• ECE homologation for road use compliance

Tailpipe options - quad 102 mm

• Angled, straight cut, chrome finish
• Angled, rolled edge, chrome finish
• Carbon fibre outer with titanium inner sleeve

Fitment details

• Vehicle: BMW 4 Series Coupe
• Model: M4 Competition
• Chassis: F82 LCI
• Power: 331 kW
• Model years: 2016 to 2018
• Configuration: Left and right rear silencers with integrated valves and four 102 mm tips
• Compatibility note: For non-GPF or non-OPF vehicles only

What enthusiasts search for

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Professional fitting

Want it installed correctly first time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Note: Only suitable for vehicles without GPF or OPF.