304 Stainless Steel Cat-Back Exhaust System

The COBB Tuning Stainless Steel Cat-Back Exhaust is designed as a direct bolt-on upgrade for the 2011-2021 GV and VA Subaru WRX/STI Sedan models. Constructed entirely from 304 stainless steel, this exhaust system boasts meticulous TIG welding for exceptional durability and a refined appearance. It also includes a flex section to provide compliance within the system. The Y-pipe utilizes a robust 3-inch tube that splits into twin 2.5-inch tubes, engineered with a cast split section that enhances longevity compared to welded alternatives. The bespoke COBB-designed mufflers form the heart of this exhaust system, featuring a single 2.5-inch inlet and dual 2.5-inch outlets. These outlets accommodate slip-on 3.5-inch dual-wall, slash-cut tips that are adjustable and feature laser-etched COBB logos. Multi-layer steel (MLS) gaskets are provided for all connections to guarantee a secure and leak-free fit. The resulting exhaust note is crisp and noticeable over stock, without introducing undesirable cabin drone. Optional Titanium exhaust tips are available for customization.