CTS Turbo 4″ Race Downpipe for BMW N20 4-Cylinder (2012-2017)

The CTS Turbo 4-inch race downpipe is purpose-built for BMW N20 four-cylinder engines fitted to 2012-2017 models including the 228i, 328i, 428i and 528i across F10, F22, F30 and F32 chassis. This full-bore race downpipe eliminates restrictive factory catalytic converters to dramatically reduce exhaust backpressure and improve turbocharger spool. Precision mandrel-bent construction ensures smooth, unrestricted gas flow from turbine to exhaust system. Designed for dedicated track applications where maximum performance takes priority over emissions compliance.