The PLM Private Label Mfg. Power Driven 3" Resonated Midpipe Kit for the 2015-2021 Subaru WRX STi is designed to maximize performance with increased horsepower, torque, and exhaust flow. Featuring CNC mandrel-bent tubing for precise fitment and optimized gas flow, this midpipe includes a high-quality resonator to enhance exhaust tone while maintaining performance. Built with durable stainless steel flanges, it pairs directly with PLM muffler deletes or axle-backs (sold separately) to complete a low-restriction, high-flow racing exhaust system. Experience improved power, aggressive sound, and unmatched quality with this performance-driven upgrade.