Titanium Cat-Back Exhaust System

The COBB Tuning Titanium Cat-Back Exhaust System is engineered for the 2011-2021 Subaru WRX and STI sedan models, covering both GR and VA chassis generations. This full titanium system utilizes Grade 1 titanium throughout its construction—including the tubing, resonator, muffler canister, and dual exhaust tips. This premium material choice not only significantly reduces weight by approximately 45% compared to equivalent stainless steel systems but also offers superior corrosion resistance and a unique aesthetic characterized by heat-blued titanium tips that develop a blue and gold coloring over time. Designed as a matched assembly, this cat-back exhaust system features a 3-inch diameter and slip-fit connections, allowing for a wide range of adjustment during installation. The bespoke straight-through oval muffler is tuned to provide a purposeful, louder sound than stock, while minimizing undesirable highway drone. COBB ensures that all necessary hangers, gaskets, clamps, and hardware are included for a complete installation. The system weighs just 24lbs assembled, contributing to improved vehicle dynamics by reducing unsprung and tail weight. The system is not emissions-related and can be used on emission-controlled vehicles.