Remus Valved Rear Mufflers/Back Boxes L/R | Axle-Back Exhaust for Audi RS6 C7 Avant 4.0 TFSI V8 | Plug & Play OE Valve Control | Uses OEM Tailpipes | Stainless Steel | ECE/E-Mark Approved | Non-GPF/OPF | RS6 Estate Sports Exhaust Upgrade

Remus valve‑controlled rear boxes for Audi RS6 C7 Avant 4.0 TFSI V8

Unlock a richer soundtrack and sharper response on your RS6 C7 estate with this premium pair of Remus rear boxes with integrated exhaust flaps. Engineered in Austria from shot‑blasted stainless steel, this axle‑back upgrade connects to the factory flap motors so you keep full valve functionality, while retaining your original exhaust trims for a discreet OEM-plus look. Reduced restriction, noticeable weight saving and a deep, motorsport‑inspired tone when the valves open make this a superb upgrade for everyday refinement and weekend thrills. E‑mark compliant with precise, hassle‑free fitment.

• Valve‑controlled sound, quiet when closed, assertive V8 note when open
• Direct swap for the stock rear boxes, plug‑and‑play with factory actuators
• Keeps your original exhaust finishers for a clean factory appearance
• Shot‑blasted stainless construction for durability and a high‑end finish
• Lower backpressure for improved throttle response and performance feel
• Lighter than the OE silencer assembly for a useful weight reduction
• Hand‑built in Austria with excellent build quality and fit
• E‑mark approved for road use

Compatibility

• Vehicle: Audi RS6 C7 Avant
• Engine: 4.0 TFSI twin‑turbo V8
• Model year: 2013
• Power: 412 kW
• Only for cars without GPF or OPF

What is included

• Left and right rear boxes with integrated valve housings
• Designed to connect to the factory valve control system
• Configured to reuse the original tail trims
• All required mounting points for straightforward installation

Why choose this upgrade

We have installed this system on customer RS6 builds and on our own demonstrators. Feedback is consistently positive on fit, finish and the addictive V8 character without unwanted drone. It is the ideal OEM‑plus solution if you want a quality valve‑controlled sound with stock looks and day‑to‑day refinement.

Professional fitting

Prefer expert installation? Book fitting with MJ Modifications in Warwickshire. Email for a tailored quote: info@mjmodifications.co.uk.

Notes

For non‑GPF or non‑OPF vehicles only.

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