Milltek Secondary Catalyst Delete Pipe | Audi Dual-Cat Systems

Description

The Milltek Secondary Catalyst Delete Pipe removes the secondary catalyst from dual-pipe exhaust assemblies, improving gas flow and reducing flow restrictions in the exhaust system. Direct fitment to Milltek cat-back systems and compatible with OEM cat-back assemblies on applicable Audi models. Constructed from T304L stainless steel with mandrel-bent tubing, this secondary cat bypass is engineered to work alongside existing primary catalyst systems. Hand-finished construction ensures OEM+ fitment and durability. No modification required for installation. Fitment: • Compatible with Milltek cat-back exhaust systems on dual-catalyst Audi models • Works with OEM factory cat-back systems where secondary catalyst removal is desired • Direct bolt-on fitment—no welding or cutting required T304L stainless construction with precision mandrel bending delivers lasting durability and measurable flow improvements over secondary catalyst restrictions. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Fits 4 vehicles including:

• 2011 Audi TT RS Quattro— TT RS Roadster 2.5-litre TFSI quattro > 2009 to 2014 / TT RS Coupe 2.5-litre TFSI quattro > 2009 to 2014
• 2012 Audi TT RS Quattro— TT RS Roadster 2.5-litre TFSI quattro > 2009 to 2014 / TT RS Coupe 2.5-litre TFSI quattro > 2009 to 2014
• 2013 Audi TT RS— TT RS Roadster 2.5-litre TFSI quattro > 2009 to 2014 / TT RS Coupe 2.5-litre TFSI quattro > 2009 to 2014
• 2014 Audi TT RS— TT RS Roadster 2.5-litre TFSI quattro > 2009 to 2014 / TT RS Coupe 2.5-litre TFSI quattro > 2009 to 2014