Remus Valved Cat-Back / Rear Silencer Back Box Muffler for BMW M4 F82 LCI Competition (2016-2018, S55, non-GPF/OPF) - Quad 102mm Tips - Stainless Performance Exhaust, ECE Approved

Remus performance exhaust upgrade for BMW M4 F82 LCI Competition

Transform your S55-powered M4 with a premium Austrian-made cat-back that delivers a deeper, race-bred soundtrack, sharper throttle response and beautiful quad 102 mm outlets. This valved sports exhaust uses your factory valve electronics for quiet cruising and maximum theatre on demand. Built from high-grade stainless steel with a shot-peened finish, it offers reduced back pressure, weight saving and a precision fit that looks and performs like it belongs on a flagship BMW.

We have installed this system on customer cars and the feedback has been outstanding. Expect a refined tone with valves closed and an aggressive, motorsport-inspired note when opened. If you want a serious BMW M4 exhaust upgrade from a world-class manufacturer, this is the setup.

Why choose this system

• Valved cat-back integrates with OE valve control for comfort and loud modes
• Race-inspired sound with minimal drone thanks to a resonated design
• High-flow layout for reduced backpressure and a noticeable performance feel
• Lightweight, shot-blasted, premium stainless steel construction
• Handmade in Austria with impeccable welds and factory-level fitment
• ECE approved for road use in applicable regions

Tailpipe options

• Quad 102 mm angled tips, straight cut, polished chrome
• Quad 102 mm angled tips, rolled edge, polished chrome
• Quad 102 mm carbon fibre sleeves with titanium internals

Vehicle compatibility

• BMW M4 Competition F82 LCI, 331 kW
• Model years 2016 to 2018
• Only for vehicles without GPF

Ideal search terms

BMW M4 exhaust upgrade, F82 M4 cat-back, S55 valved exhaust, quad tip 102mm back box, BMW M4 sports exhaust UK, Remus M4 system, BMW M4 F82 performance muffler, valvetronic M4 exhaust, stainless steel M4 exhaust, carbon tip M4 exhaust.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote, availability and lead times. We are happy to advise on tip selection and sound levels for daily use or track-focused builds.

Good to know

• Direct bolt-on fitment using factory mounting points and valve motors
• Designed to work with the original electronics for seamless operation