Milltek Sport Cat-Back Valved Exhaust System for Audi RS4 B8 4.2 FSI quattro Avant (2012+) with Resonated Downpipes - Polished or Cerakote Black Tips - 60.3mm - SSXAU337 SSXAU336

Transform your RS4 B8 V8 with a valve‑controlled rear system

Give your Audi RS4 B8 4.2 V8 the sound it deserves with this UK‑engineered Milltek Sport rear section and resonated front pipes package. It delivers a richer, deeper tone with switchable valves for a quiet cruise and an aggressive soundtrack when you want it. Built for the B8 RS4 Avant from 2012 onwards, it fits beautifully, looks fantastic and elevates the driving experience every time you press the starter button.

Choose your tailpipe finish to suit your car: bright polished tips for a classic look or stealthy Cerakote black trims for a more subtle style. The system uses active valve technology and resonated pipework for a balanced, refined character that works perfectly on daily drives and weekend blasts.

Key reasons enthusiasts pick this system

• Tuned for the RS4 B8 4.2 V8 Avant 2012 onward for an authentic V8 soundtrack
• Valve control for mellow neighbourhood starts and a fierce note on demand
• Tip options: polished stainless look or ceramic‑coated black finish
• Designed and manufactured in Britain by Milltek Sport
• Excellent fitment, quality welds and premium aesthetics throughout

Specification

Tube diameter: 2.37 inch 60.30 mm

What you receive

• Left‑hand resonated front section
• Right‑hand resonated front section
• Centre silencer delete assembly
• Left‑hand rear silencer with active valve
• Right‑hand rear silencer with active valve

Vehicle application

Audi RS4 B8 4.2 FSI quattro Avant 2012+

Part numbers

SSXAU337, SSXAU336

Real‑world results

We have installed this setup for RS4 owners who wanted a genuine upgrade in tone and presence without losing day‑to‑day manners. Feedback has been consistently positive, highlighting the deeper note, slick valve operation and the high‑end finish on the pipework and tail trims.

Fitting and support

Professional installation recommended. For fitting at MJ Modifications in Warwickshire, request a quote at info@mjmodifications.co.uk. We can run a compatibility check before dispatch. Add your UK registration or the last 7 characters of your VIN at checkout.

Search‑friendly terms

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