Redesigned dual mufflers with aggressive 4inch tips that amplifies a rich powerful note. Enhance your driving experience with top-tier exhaust system catered for the ultimate Subaru enthusiast. Fitment Information Subaru WRX/STI VA (2015, 2016, 2017, 2018, 2019, 2020, 2021) Note WE DO NOT RECOMMNED USING AFTER MARKET ADAPTERS  Using adapters may cause incorrect fitments. Remove factory donut gasket with this product. Specs & Features Exhaust Type: Cat Back Exhaust Bolt on 4pc design Piping Diameter: 3inch piping to 2.5inch Y-piping design Tip Diameter: Large 4inch tip design quad slant cut tip style Laser engraved logos Piping Material: T304 stainless steel Tip Material: T304 stainless steel Muffler Material: T304 stainless steel Muffler: 2 REMARK proprietary designed mufflers Welding: Hand crafted high quality tig welding Weight: Optimal weight reduction from the factory mufflers Mid-Pipe Option: Resonated or Non-Resonated Option Tip Option: Stainless Tips or Burnt Stainless Remark USA exhaust systems are amongst the best looking and best sounding we have seen! Check out the photos for some of the best craftsmanship of any exhaust system on the market.  Remark accomplishes this by using only the best materials, careful hand welding and attention to detail that rivals anything else. Remark exhaust systems also feature a clean, crisp sound that brings out the natural acoustics of our engine to produce an awesome modified sound.