Wagner Tuning Downpipe Kit

304 Stainless downpipe kit with 100cpi high-flow cats, engineered using the latest CAD design and flow technology
*Note:- For B5 S4 - these will require linkpipes fabricated, and rear lambda cables extending (if fitted)*
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Wagner Tuning
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Product Details

*Note:- For B5 S4 - these will require linkpipes fabricated, and rear lambda cables extending (if fitted)*

The Wagner Tuning RS4 Downpipe kit is designed as a high performance, direct factory replacement downpipe kit for the B5 Audi S4/RS4 & C5 A6/Allroad 2.7T.

Engineered using the latest CAD design and flow technology, and constructed using top quality materials to their exacting standards, the Wagner Tuning RS4 Downpipe kit provides maximum performance and longevity.

The RS4 Downpipe Kit features 76mm diameter tubing constructed from 304 Stainless Steel. This downpipe kit eliminates the power-robbing factory catalytic converters and replaces them withi high-flow 100cpi racing catalytic converters.  Turbo outlet flange fits both RS4 & RS6 turbos


  • 76 mm diameter tubing
  • SS304 stainless steel construction
  • eliminates power robbing pre-catalytic converters
  • High-Flow 100cpi racing main catalytic converters
  • RS4 & RS6 turbo double flange
  • 100% accurately fitting for the Audi RS4 B5 and A6 2.7 Biturbo with 230-250 hp (except A6 with automatic gearbox), adapts to the series exhaust system
  • with modifications towards the exhaust system also compatible for Audi S4 B5 ( except automatic gearbox)


  • 2000 - 2002 Audi S4 2.7T (B5)
  • 2000 - 2002 Audi RS4 2.7T (B5)
  • 1998 - 2004 Audi A6 2.7T (C5)
  • 2001 - 2005 Audi Allroad 2.7T (C5)

*Note: These downpipes will require linkpipes fabricating to fit S4 and rear lambda cables rerouting (if fitted).

**For offroad use only.**

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B5 S4 All 2.7T
Audi C5 A6 Quattro 2.7T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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