MillTek Audi RS4 Sport Cat (2019-2021) Tunes & Software Direct bolt-on replacement for the

Direct bolt-on replacement for the OEM tip outlets with no cutting or welding required

Replace the worn-out or broken core of your factory Ferrari catalytic converter(s) with a new high-performance HJS tri-metallic catalytic converter core

or Polished Stainless Steel

retaining the full functionality of the factory diffuser

The largest HJS German EURO 6 homologated tri-metallic catalytic converter that will fit in the factory location

MillTek Audi RS4 Sport Cat (2019-2021) Tunes & Software Direct bolt-on replacement for theOur range of Cast Downpipes offer further enhancements to gas flow and heat management, specifically designed to increase efficiency and performance gains. The HJS High Flow Sport Catalyst is the highest quality and best performing aftermarket Catalyst. The quality of the product is made to reduce the density of OEM Catalysts and be able to maintain emission regulations with daily usage. Standard OEM Catalysts are usually 500 600 cells, our high flow