The HKS Legamax Premium Cat Back Exhaust is a top - notch exhaust system engineered for 2015 - 2021 Subaru WRX and STI models. It offers remarkable performance enhancements, such as boosting horsepower, torque, and throttle response, while also reducing turbo lag. The exhaust features smooth bends that ensure an obstruction - free flow. Crafted from 304 stainless steel, it is durable and reliable. With a 3 - inch piping diameter and quad 3.50 - inch polished tips, it not only looks great but also produces an aggressive exhaust sound. The exhaust hangers are welded onto the OEM locations, providing a direct fit without any modifications. It comes with new gaskets and hardware for easy installation. The Legamax exhaust system has a mature tone. You can enjoy the performance of 75MM piping, and HKS has added a 101.6MM silencer and a silent chamber to reduce unwanted attention.


Using this HKS Legamax exhaust is easy. First, gather all the parts included in the package, like the new gaskets and hardware. Make sure your vehicle is parked on a flat surface and the engine is cool. Locate the OEM exhaust hangers on your 2015 - 2021 Subaru WRX or STI. Then, attach the new exhaust using the provided hardware and align it with the OEM locations. Tighten all the bolts properly to ensure a secure fit. When it comes to maintenance, regularly check the exhaust for any signs of damage, like rust or loose parts. If you notice any issues, get them fixed right away. Also, keep the polished tips clean by using a mild metal cleaner. And remember, if you're not comfortable with the installation, it's a good idea to have a professional do it for you.