This HKS Racing Cat Back Exhaust is engineered for Subaru WRX and STI Sedans from 2011 to 2014. It's a top - notch muffler designed for those who crave maximum performance. Crafted from 409 Stainless Steel, a high - quality material, it guarantees reliable operation for years. The exhaust system significantly enhances exhaust flow and produces an amazing sound. With a 4.75 - inch tip diameter and 3.35 - inch inner tubing diameter, it's built for optimal performance. The piping is coated black to resist rust and corrosion, while the muffler has a stylish, polished finish with a titanium - finished tip. It comes with gaskets and hardware but does not include a silencer. The sound level when close is 95 dB. If you're using a stock j pipe or downpipe, you'll need the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046.
Using your HKS Racing Cat Back Exhaust is straightforward. First, make sure you have all the necessary parts including the gaskets and hardware that come with the product. If you're using a stock j pipe or downpipe, don't forget to get the GrimmSpeed adapter p/n 077046. When installing, follow the standard procedures for exhaust system installation. For maintenance, regularly check the exhaust for any signs of damage or rust. Although the piping is coated black for extra protection, it's still a good idea to keep an eye on it. Clean the polished finish of the muffler and the titanium - finished tip with a mild cleaner to keep them looking great. If you notice any issues with the exhaust flow or sound changes over time, it might be a good idea to have it inspected by a professional.
