Upgrading the downpipe in the Ford Focus ST removes the extremely restrictive catalytic converter and allows the turbo to breathe much easier. While increasing horsepower and torque, the Milltek downpipe will also aid in giving a sportier tone to the exhaust, especially when paired with a higher flowing catback exhaust. Milltek's Focus ST downpipe is made of 100% stainless steel and features a flex section making sure to relieve any stress on the construction of the downpipe while driving the vehicle. This helps keep the new downpipe stay in top shape throughout it's life. With the higher flowing performance cat, you'll stay emissions friendly while upgrading your exhaust. Allow your Focus ST to open up and flow with a high quality downpipe from Milltek.