Supersprint Downpipe With Metallic Catalytic Converter (100CPSI) WRC - BMW 1 Series F20/F21 M140I | 2 Series F22/F23 M240I | 3 Series F30/F31 340I M2 Competition (F87) Road and track tested by

Road and track tested by BILSTEIN for fi ne tuning

A standard M3 CSL does this on average

we designed a pair of tubes with smooth curves and with an innovative Venturi stack matched to the inner diameter of the filter neck

Let us know what modifications you have to ensure you receive the correctly tuned file for your modifications

Threaded bung provided for oxygen sensor

Supersprint Downpipe With Metallic Catalytic Converter (100CPSI) WRC - BMW 1 Series F20/F21 M140I | 2 Series F22/F23 M240I | 3 Series F30/F31 340I M2 Competition (F87) Road and track tested byNOT ROAD LEGAL This Supersprint downpipe is designed to be a plug&play upgrade. It replaces the stock components without any modification. O2 sensor plugs and mounting brackets are in the same position as the OEM unit. The catalytic converter is a 100 CPSI unit, with a metallic honeycomb and a high content of noble metals. The shape and volume have been decided for optimal efficiency, thus the generous size. The high amount of noble metals avoid any