Secondary Catalyst Bypass (Audi RS3 8V/8Y/TTRS MK3)

Some vehicles sport two catalysts due to their dual pipe assembly. The Secondary Catalyst Bypass pipe removes the secondary catalyst to further improve gas-flow and reduce the restrictions caused by catalysts within the exhaust system.

All our performance exhaust systems are designed with you in mind, and we cater to an ever-expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year to deliver the most in demand solutions to all your performance exhaust requirements. All of our products are made in the UK and distributed to more than 90 countries worldwide, making Milltek Sport one of the most accessible performance aftermarket brands on the market.