Stainless Steel Racing Catalyst, B9 Audi S4/S5

  Product Description: The 034Motorsport Stainless Steel Racing Catalyst for B9 Audi S4/S5 is designed as a drop-in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and...

Cast Stainless Steel Racing Catalyst, B9 Audi A4/A5 & Allroad 2.0 TFSI

034Motorsport is proud to introduce the all-new Cast Stainless Steel Racing Catalyst for B9 Audi A4/A5 & Allroad models equipped with the longitudinal 2.0 TFSI engine! Designed as a drop-in replacement for the restrictive factory catalytic converter,...