Milltek 4.5in Downpipe & 200 CPSI Euro 6 Cat For G20/G22/G42 BMW M340i/M440i/M240i

4.5inch Downpipe with 90mm Flex & 200CSPI Euro 6 Cat

Milltek Large Bore Downpipe with 200-cell high-flow catalyst for the BMW B58 engine and the Toyota Supra A90. 90mm (3.54") mandrel-bent T304L stainless steel with hand-finished welds and CNC-formed flanges. Direct fitment on OEM hangers and mounting points, no modification required. Stage 2 ECU remap required to realize the gains.

The 200-cell catalyst drops cell density well below the 500 to 600 cell OEM substrate, cutting restriction through the turbo-back path. Supplied with the US/ROW adaptor.

Fitment & Compatibility

• BMW M340i (G20/G21), 2021 and later, including xDrive
• BMW M440i (G22) Coupe, 2021 and later, NAS/ROW vehicles only
• BMW M240i (G42) Coupe xDrive, 2022 and later
• Toyota Supra A90 Coupe 3.0 Turbo, 2019 and later, USA/ROW without OPF/GPF, auto and manual
• Bore: 90mm (3.54"), mandrel-bent T304L stainless steel
• Catalyst: 200-cell high-flow catalyst
• Requires a Stage 2 ECU remap