2013-2018 Ford Focus ST Cat Back Exhaust & Cold Air Engine Intake Kit

•Brand New
•Roush Performance part # 421610
•Ford Performance part # M-9603-FSTA
•Fits 2013-2018 Ford Focus ST
•Also fits 2016-2018 Ford Focus RS
•Kit includes Ford Performance Cold Air Kit &Roush Performance Cat Back Exhaust

Ford Performance Cold Air Kit
•Ford Performance part # M-9603-FSTA
•Original equipment on the 2016-2018 Ford Focus RS
•Open element airbox with "RS" embossed logo
•Comes w/ Two (x2) Filter options: OEM dry filter & K&N washable oiled filter
•Cold air inlet allows better breathing for increased horsepower •Easy installation

Roush Cat Back Exhaust System
•Roush Performance Part # 421610
•High-flow 3" cat-back system
•Made of high-quality 409 stainless steel
•Includes chrome-flashed 304 stainless steel tips
•Utilizes same factory mount locations
•ROUSH 3 Year/36,000 Mile Limited Warranty included
•Check local noise ordinances for legality


Pump up your Focus with the ROUSH Performance High-Flow Exhaust System. This exciting new kit from Roush combines raw performance with a deep, throaty note to take the ordinary sport-compact to a sport-tuned machine.

The high-flow, cat-back system features larger than stock, 3" diameter piping.This system is also made entirely of T409 stainless steel, providing you one of the most durable and affordable exhaust systems on the market. Even better, all pipes have been manufactured with CNC mandrel-bend tooling, allowing for unrestricted airflow. This system also features a straight-through, perforated-tube muffler for optimum exhaust tone. To complete the look, a set of round, dual 4" diameter T304 stainless steel tips have been chrome flashed and designed with a rolled edge. As with all of Roush's round exhaust tips, the traditional Roush wordmark has also been neatly stamped on the end, letting everyone know that you mean business.

Click here to view Roush's installation video for the 422065 Cold Air Intake Kit