Remus Cat-Back (Catback) Valved Performance Exhaust for BMW M4 G82 Competition/Comp 2021+, Active OE Valve Control, Quad 102mm Angled Carbon Fibre Tips with Titanium Inners, Stainless Steel Rear System, S58B30A

BMW G82 M4 Competition Performance Exhaust Upgrade with Quad Carbon Tips

Unlock the full character of your S58-powered BMW with a premium valved rear system engineered for the G82 M4 Competition. This upgrade delivers a deep, motorsport-inspired tone with everyday refinement, thanks to factory-style electronic valve control for seamless switchable sound. Featuring four 102 mm angled carbon fibre outlets with titanium inner sleeves, this is a serious enhancement for enthusiasts who want sharper response, richer acoustics and standout looks.

Built from full stainless steel with a durable media-blasted finish and precision hand craftsmanship in Austria, this lightweight assembly reduces restriction for improved flow and drivability. The result is a crisp, performance-focused soundtrack and a sharper feel on throttle without drone when cruising.

Why enthusiasts choose this system

• Valved exhaust with plug-in compatibility to factory actuators for OEM-style control
• Quad 102 mm angled carbon fibre tailpipes with titanium inner construction for a premium finish
• Reduced backpressure for stronger response and performance potential
• Lightweight stainless build with a tough, media-blasted surface
• Accurate, OEM-level fitment and high-quality Austrian craftsmanship
• Track-inspired tone with civilised manners when valves are closed

Real-world feedback

We run this system on customer cars and the response has been fantastic. Owners love the clean fit, the refined valve operation and the aggressive note when you want it. It looks as good as it sounds.

Compatibility

• BMW M4 G82 Competition
• Engine: S58B30A
• Power: 353 kW
• Model years: 2021 onwards

Important installation note

The original exhaust requires cutting during installation.

Part number

081021 1100 + 081021 1200 + 081021 1300 + 081021 1400 + 081021 1510 + 0046 70CS

Fitting and support

For professional installation, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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