aFe Introduces the Takeda cat-back exhaust system for the 13-18 Ford Focus ST with the L4-2.0L (t) EcoBoost engine. In testing, this system resulted in gains up to +13 horsepower and +15 lbs. x ft. of torque verified by our in house dyno. This exhaust is constructed from 3" brushed finish, mandrel-bent, 304 stainless steel tubing that is 100% MIG-welded for increased flow and lowered restrictions. The system also uses a high-flow, polished 304 stainless steel resonator used to absorb high pitch tones producing a performance sound and unleashing all available horsepower and torque. This system is finished off with double wall, gloss black, 304 stainless steel tips and are laser etched for an aggressive style. This system uses all factory hanger locations for a hassle-free installation.