Milltek Sport BMW M3/M4 F80/F82 Competition Downpipe removing OPF

High-flow downpipe with a catalyst replacing the GPF filter, dedicated to the BMW M3 F80 and M4 F82/F83 Competition. The modification of the front part of the exhaust significantly reduces back pressure, which translates into improved vehicle performance. The component is made of stainless steel. Designed to connect with the Cat-back exhaust from Milltek Sport.