The Velossa Tech Big Mouth for your Fiesta ST180 is a great addition in aiding the performance and efficiency of your intake. The duct is engineered for better low-speed airflow and will channel a greater mass of air to your filter element. This allows the turbo to become more efficient as absolute pressure is increased. The Big Mouth also ensure you get the coldest air feed possible ensuring your charge air temps stay in check. With its intimidating look and aerodynamically engineered features others will know, you mean business!