Roush 2012-2019 Ford ST Focus Hi-Flow Performance Exhaust KitPump 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