IAG Performance IAG-EXT-1001 IAG Equal Length 3-Bolt Header & Uppipe

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IAG's Equal Length Headers are the perfect way to add more performance to your Subaru WRX STI. By implementing a 4-2-1 configuration with equal-length tubing and merged collector, IAG is able to improve your turbo spool up by 300rpm. Due to the free-flowing design of this header, you will see gains across the entire RPM range, as exhaust flow is vastly improved. The IAG headers are fully constructed of 304 stainless steel, including cast stainless flanges! The equal length headers feature a 45mm pipe diameter for maximum flow and performance. The header also features a slip-joint expansion section to accommodate for flex caused by heat cycling. Each IAG header is fully TIG welded for maximum strength. Each header package includes the IAG 60mm uppipe that utilizes a 3-bolt cast flange and multi-layer gasket between the manifold and uppipe, providing a stable connection without exhaust leaks. The IAG Header & Uppipe adds all of the hardware and high quality, multi-layer gaskets needed for installation including specialty copper exhaust nuts, which are proven to maintain their torque even in the extreme conditions of heat cycling present at the exhaust flange. Due to the equal length design, these headers will alter the exhaust tone from the distinct "boxer rumble" to a smoother exhaust note.This Part Fits: Year Make Model Submodel Notes 2006 Subaru Forester XT Limited 2007 Subaru Forester XT Limited 2002 Subaru Impreza WRX 2003 Subaru Impreza WRX 2004 Subaru Impreza WRX 2005 Subaru Impreza WRX 2006 Subaru Impreza WRX 2007 Subaru Impreza WRX 2008 Subaru Impreza WRX 2009 Subaru Impreza WRX 2010 Subaru Impreza WRX 2011 Subaru Impreza WRX 2012 Subaru Impreza WRX 2013 Subaru Impreza WRX 2014 Subaru Impreza WRX 2004 Subaru Impreza WRX STI 2005 Subaru Impreza WRX STI 2006 Subaru Impreza WRX STI 2007 Subaru Impreza WRX STI 2008 Subaru Impreza WRX STI 2009 Subaru Impreza WRX STI 2010 Subaru Impreza WRX STI 2011 Subaru Impreza WRX STI 2012 Subaru Impreza WRX STI 2013 Subaru Impreza WRX STI 2014 Subaru Impreza WRX STI 2005 Subaru Legacy GT 2006 Subaru Legacy GT 2007 Subaru Legacy GT 2008 Subaru Legacy GT 2009 Subaru Legacy GT spec.B 2015 Subaru WRX STI 2016 Subaru WRX STI 2017 Subaru WRX STI 2018 Subaru WRX STI 2019 Subaru WRX STI 2020 Subaru WRX STI 2021 Subaru WRX STI Show more