Fitment Information Ford Focus ST (2013, 2014, 2015, 2016, 2017, 2018) Emissions Information This is a catback exhaust and does not alter, remove or replace any emissions equipment. Specs & Features Material: Stainless Steel Includes: All hardware and gaskets Install: Bolt On Pipe Size: 76mm Tip Size: 110mm The Invidia Q300 Exhaust is one of the most innovative exhaust systems on the market.  The Q300 features a specially designed flat bottom muffler that ensures high speed aerodynamics often overlooked by other exhaust manufactures.  The Invidia muffler has continuous piping so the exhaust has free flow through the muffler, reducing backpressure and increasing hrosepower and torque while producing the incredible sound that the Invidia Q300 exhaust is known for. The Q300 utilizes SUS304 stainless steel that is one of the strongest on the market, and has a beautiful deep polish.  All piping is mandrel bent for the best exhaust flow, and utilizes CNC machined flanges that are robot TIG welded to produce some of the best looking and strongest welds on the market.  The Invidia Q300 is built to have outstanding durability and appearance.  Invidia Q300 Features Bolt on design - includes all necessary hardware for install Flat bottom design muffler for greater under body aerodynamics Free Flow Invidia Muffler Rich, Deep and Refined Sound SUS304 Polished Stainless Steel Mandrel Bent Piping Beautiful robot TIG welded exhaust flanges