3" Catted Downpipe Limited

The GrimmSpeed 3" Catted Downpipe Limited is engineered for performance enthusiasts looking to unlock significant power gains by addressing the restrictive nature of OEM catalytic converters. This downpipe replaces the factory units with a single, high-flow 300-cell metallic substrate catalytic converter, drastically improving exhaust flow and performance potential while retaining emissions control. Proudly manufactured in the USA, this downpipe is constructed with innovative 3-D contour flanges and features divorced wastegate routing for optimal flow dynamics. Key features include provisions for both the factory O2 sensor and aftermarket wideband AFR sensors, ensuring compatibility with various tuning setups. The limited edition also includes a black ceramic coating for enhanced durability and aesthetics. Installation instructions are available, and the package comes complete with GrimmSpeed gaskets for a proper seal. This downpipe is specifically designed for a range of Subaru models, including the 2008-2014 WRX, 2008-2021 STI, 2005-2009 Legacy GT (Manual transmission only), and 2009-2013 Forester XT. Fitment confirmation is highly recommended before purchase to avoid potential issues.