---3" Bore throughout with twin tailpipes ---A complete upgrade kit to a full T304 grade stainless steel system ---Free flowing system to get the most from the 1.6 Ecoboost engine ---3" Polished tailpipes to fit the OEM rear valance ---Engineered to improve throttle response and increased power and torque across the entire RPM range Compatible with: --- Ford Fiesta Mk7 ST180 1.6 Ecoboost 13-18 models.