MillTek Audi RS4 Sport Cat (2019-2021) M3 (E46) (2000-2006) Heat Shield with Gold Reflective

Heat Shield with Gold Reflective Backing

Replace the restrictive OEM catalytic converter with a free flowing HJS German tri-metallic race quality 200 cell HD core that flows 93% to 95% of a straight pipe

Deliver impressive power gains regardless of modifications

These are the exact same valves used by Lamborghini on their hypercars and Ferrari and McLaren on their GT cars

Very aggressive sports car sound like a 935 and 962

MillTek Audi RS4 Sport Cat (2019-2021) M3 (E46) (2000-2006) Heat Shield with Gold ReflectiveOur 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