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ModBargains here with another great exhaust option for your 2013+ Focus ST! Eliminate the restrictions of the factory exhaust system that are robbing you valuable power and torque by replacing them with this 3" XP series Exhaust for Focus ST from MBRP. Manufactured in a variety of materials to suit your budget and style, MBRP's Cat-Back Exhaust features mandrel bent tubing for a 38% increase in flow, resulting in a +18whp and +16ft/lb power gain.
MBRP 3in Cat-Back Exhaust for 2013-14 Focus ST (S4200)
If you have any questions, don't hesitate to send me PM, email or give me a call at 714.582.3330 extension 8002, or ask for Jurrian.