We liked the Greddy Supreme SP Exhaust System for the 2013-2017 Focus ST so much that we decided to use it on our own Mospeed Focus ST! By reducing back pressure for a free flowing exhaust, this cat-back has produced Greddy tested gains of up to 24hp & 11tq. Manufactured with 100% T-304 stainless steel and finished with gorgeous Greddy style 4" tips, this is our favorite looking exhaust offered for the Focus ST. The exhaust note is deep, and aggressive - just how we like it!
Constructed from durable 3" diameter mandrel bent T-304 stainless steel tubing for its corrosion resistant properties, this Greddy Cat-Back features two inline, compact Supreme SP straight through muffler sections and finishes perfectly with two 4" double walled tips in the stock exit location.
Fits 2013-2014 Focus ST