The AWE Touring Edition Exhaust is perfect for Honda Civic Si drivers from 2017 to 2020 who crave a more exciting driving experience. Whether you're on the highway for a long - distance trip or hitting the throttle on a back road, this exhaust will enhance your ride. It features a 3 - inch T304L stainless steel construction. The design is focused on giving you straight - pipe performance, a great exhaust sound, and no annoying drone inside the car at highway speeds. With AWE's patented 180 Technology®, you'll enjoy a smooth, rasp - free sound. And don't worry about fitment or check engine lights, as it's backed by great guarantees and is easy to convert between different editions and tip styles.