This Injen axle - back exhaust is perfect for car enthusiasts who want to enhance their 2012 - 2015 Honda Civic Si. Whether you're cruising on the highway or hitting the race track, it will give your car an aggressive sound and more power. It's made from mandrel - bent stainless steel tubing and handcrafted in the USA. The exhaust includes all the necessary parts for an easy installation, so you can quickly upgrade your ride and enjoy a better driving experience.