Bull-X Downpipes Audi RS4, RS5 B9 2.9TFSI

These Bull -X downpipes can be directly exchanged for the stock downpipes. The available catalytic converters offer increased exhaust flow and reduced backpressure, resulting in increased power, lower exhaust gas temperature, and reduced stress on the turbochargers.
This is further enhanced by the larger pipe diameter (121-101mm) and the elimination of the second catalytic converter.

The downpipes run from the original turbo flange to 121mm, then continue to 101mm and are only reduced to 76mm directly at the original flange.

Also ideal for vehicles with increased performance.
Furthermore, an improvement in sound (change in tone) is noticeable after installing these downpipes, especially in combination with a sports exhaust system.

• OEM downpipes each have two catalytic converters installed, Bull-X downpipes are fitted with a maximum of one catalytic converter
  
• including integrated insulation
  
• Material: stainless steel
  
• completely TIG welded
  
• noticeably improved sound (even with OEM exhaust system)

Compatible vehicles:

• Audi RS4 Avant AW5/B9 2.9L DECA 331kW/450PS
  
• Audi RS5 F53/B9 2.9L DECA 331kW/450PS
  
• Audi RS5 Sportback F5A/B9 2.9L DECA