Remus Racing Valved Cat-Back Exhaust for BMW M3/M3 Competition G80 & M4/M4 Competition G82 (2021+) – Performance Sports Exhaust, Valvetronic/Flap Control, 76

Race-bred valve-controlled rear section for BMW G80 M3 and G82 M4

Turn your M car into something truly special with this Austrian hand-crafted stainless steel sports system. Designed for the G80 and G82 platforms including Competition variants and OPF-equipped cars, this valve-controlled rear section and pipework delivers a harder-edged soundtrack, freer flow and precise OE-style valve integration. If you are searching for a serious track-focused catback for the latest M3 or M4, this is the premium choice enthusiasts ask for.

Why enthusiasts choose this system

• Authentic motorsport tone with deep idle, crisp upshifts and an addictive wide-open throttle character
• Flap control uses the factory actuators for seamless drive mode integration
• High grade stainless construction with shot-blasted finish for a purposeful look and durability
• Larger 76 mm pipework vs the restrictive 70 mm OE diameter for reduced back pressure and improved flow
• Perfect fit to factory mounting points with plug-in spherical connections
• Handcrafted in Austria with a 24 month manufacturer warranty

What you get in the kit

• Racing centre section with integrated valves
• Connection tube package with spherical plug-in joints
• Racing GPF replacement tube with front silencer replacement tube 081021 1300 included, or front silencer replacement tube for US vehicles without GPF
• Tailpipe sets are required but sold separately

Sound and drive

We have installed this system on customer G80 and G82 builds and the feedback has been fantastic. Expect a richer note at idle, a pronounced bark under load and noticeably freer revving thanks to the larger diameter pipework. Valves operate just like stock via the OEM electronics, so you can cruise quietly and unleash the full tone when you want it.

Tip options available separately

• Stainless chromed angled rolled edge 102 mm
• Stainless chromed angled straight cut 102 mm
• Stainless chromed straight cut with carbon insert 98 mm
• Stainless black chrome straight cut with carbon insert 98 mm
• Full carbon with titanium internals 102 mm

Pipe diameters

• OE diameter 70 mm
• Upgraded diameter 76 mm

Vehicle fitment

• BMW G80 M3 2021+ with or without GPF
• BMW G80 M3 Competition 2021+ with or without GPF
• BMW G82 M4 2021+ with or without GPF
• BMW G82 M4 Competition 2021+ with or without GPF

Type G234M.

Important information

• RACING product with no ECE approval
• For closed-course use only, not permitted for public road use
• The OE exhaust requires cutting during installation
• Uses the original mounting points
• For track-only parts such as this catback and GPF replacement components, an ECU calibration is recommended to optimise performance and prevent warning lights

Professional fitting

We recommend installation by specialists. MJ Modifications offers expert fitting for G80 and G82 exhaust upgrades at our Warwickshire workshop. Request a fitting quote via info@mjmodifications.co.uk.

Free fitment check

We verify compatibility before dispatch. Add your UK registration number or the last 7 digits of your VIN at checkout.

Part numbers

081021 1200 + 081021 1400 + 081021 1510

Manufacturer and warranty

Manufactured by REMUS with a 2 year warranty.

Search terms customers use

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