Remus Valved Non-Resonated Cat-Back Exhaust System for Audi RS6 C7 Avant 4.0T TFSI Biturbo V8 (2013-2018) | Performance Sports Catback with OEM Valve/Flap Control | Resonator Delete, Uses OEM Tailpipes | Stainless Steel | ECE Approved | Pre-OPF/No GPF

Audi RS6 C7 4.0 Biturbo V8 performance cat back by Remus with factory flap control, non-resonated centre, retains OEM tail trims

Transform the character of your RS6 C7 with a premium sports system engineered for serious sound and real-world driveability. This Remus cat back replaces the pipework from the catalytic converters rearwards, featuring an unsilenced centre section and valve-controlled rear silencers to unleash a deeper, richer V8 soundtrack while keeping everyday refinement when the flaps are shut. It keeps the original Audi tailpipe finishers for a discreet OEM plus look that suits the Avant perfectly.

Built in Austria from high-grade stainless steel with a shot-blasted finish, the system is tuned for low back pressure, crisp throttle response and a clean bass-heavy note without the droning that spoils long journeys. The integrated valves plug straight into the factory controls, so Comfort remains calm and subtle, while Dynamic opens the taps for a motorsport-inspired roar under load. It is an effortless, bolt-on upgrade that fits beautifully and looks like it belongs there from day one.

Key reasons enthusiasts choose this setup

• Resonator delete centre for a stronger, more engaging V8 tone with genuine volume when you want it
• Flap-controlled rear boxes that work with the original drive modes for OEM integration
• Keeps the stock tailpipe trims for a stealthy factory appearance
• Optimised flow for sharper response and a freer-revving feel
• Durable stainless construction with shot-peened surface for corrosion resistance
• Direct-fit, plug-and-play installation with precise alignment
• Handmade in Austria by Remus with EU type homologation for road use where applicable
• Designed for pre-OPF models only

Fitment

• Vehicle: Audi RS6 C7 Avant
• Engine: 4.0 TFSI twin-turbo V8
• Layout: Cat back system with non-resonated centre and valve-actuated rear sections
• Tailpipes: Reuses factory finishers
• Compatibility: Cars without petrol particulate filter OPF/GPF

What it sounds and feels like

Quiet when you need it, fierce when you do not. In Comfort the cabin stays civilised with a refined, bassy thrum. Select Dynamic and the flaps open to deliver that iconic RS6 bark, stronger upshifts and addictive overrun character without harshness. It is the sweet spot between premium road manners and weekend excitement.

Proven by us and loved by customers

We have installed this system on multiple RS6 C7 cars and feedback has been consistently excellent. Owners praise the fit, the quality of the finish, the lack of drone on the motorway and the huge step up in character when the valves are open. It is the upgrade that makes the 4.0 biturbo feel as special as it should.

Installation

Professional fitting available at MJ Modifications in Warwickshire. For a tailored install quote and lead times, email info@mjmodifications.co.uk.

Note: For vehicles without OPF/GPF only. EU type approval where applicable.

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