Milltek Sport Valved Cat-Back Exhaust System for Audi RS5 B8/B8.5 (8T) 4.2 V8 Coupe 2010-2015 - Switchable/Active Valve Catback, Performance Sports Exhaust, Non-Resonated or Resonated - OEM Tip Compatible - SSXAU334 / SSXAU267

Milltek Sport Valve-Controlled Cat Back System for Audi RS5 B8 Coupe

Give your 4.2 V8 the soundtrack it deserves. This Milltek Sport valve-equipped cat back system transforms the Audi RS5 B8 Coupe with a richer, more assertive tone while keeping the factory tailpipe finish for a clean OEM look. Developed in the UK by one of the most respected exhaust specialists, it is a direct replacement from the catalytic converters back for a precise fit and a premium sound experience on every drive.

We have installed and run these systems on our own cars and customer vehicles at MJ Modifications. Feedback has been outstanding for build quality, fitment and the addictive V8 character it unlocks. Choose Non-Res for maximum presence or the Resonated option for a more subtle long-distance friendly sound level.

Why enthusiasts choose this upgrade

• Valve-controlled rear silencers for an engaging drive and genuine theatre when you want it
• Keeps the original RS5 tailpipe trims for a factory finish
• Designed and engineered in the UK with decades of performance exhaust know-how
• Cat back layout for straightforward installation and a refined, deep V8 tone
• Pipe diameter 60.30 mm 2.37 inch

Options and part numbers

• SSXAU334 Non-Resonated
• SSXAU267 Resonated

What you get in the box

Non-Resonated SSXAU334

• 1 x LH downpipe resonated
• 1 x RH downpipe resonated
• 1 x centre silencer replacement assembly
• 1 x LH rear silencer with active valve
• 1 x RH rear silencer with active valve

Resonated SSXAU267

• 1 x LH downpipe resonated
• 1 x RH downpipe resonated
• 1 x centre silencer assembly
• 1 x LH rear silencer with active valve
• 1 x RH rear silencer with active valve

Vehicle fitment

Audi RS5 B8 Coupe model years 2010, 2011, 2012, 2013, 2014, 2015.

Fitment check before dispatch

We will verify compatibility prior to shipping. Add your UK registration or the last 7 digits of your VIN at checkout and we will confirm suitability for your RS5 B8.

Professional installation

Want it fitted perfectly first time? Book expert installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Tech spec

• Pipe diameter 60.30 mm 2.37 inch

Why Milltek Sport for your RS5

UK engineered and proven through years of development and motorsport involvement, Milltek Sport systems are built for sound quality, fit and durability. This RS5 B8 cat back delivers the tone, character and day-to-day usability V8 owners want.

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