Milltek Catted Downpipe for OE Exhaust Systems (15-23 Mustang EcoBoost)Find parts that fit my vehicle

Enhanced Performance Downpipe. The Milltek Catted Downpipe for OE Exhaust Systems is designed to improve both efficiency and sound by increasing exhaust gas flow with a larger bore than standard components. It is intended for enthusiasts seeking a significant performance upgrade while retaining compatibility with the original cat-back exhaust system. The product requires a Stage 2 ECU remap to maximize benefits.

Construction and Appearance. This downpipe features a large 70 mm diameter pipe engineered to improve exhaust flow. Manufactured in the UK, the unit includes a high-flow sports catalyst but is a race product and not E-marked.

Installation. Installation replaces the original downpipe while retaining the OE cat-back exhaust system. No drilling is required; professional ECU remapping is necessary to fully leverage the performance gains.

Application. Specifically designed to fit the 2015 to 2018 S550 Mustang EcoBoost Fastback and 2024+ S650 Mustang EcoBoost Fastback models with the factory cat-back exhaust system. It is not compatible with aftermarket cat-back systems without modifications or different downpipe options.

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