GrimmSpeed Unequal Length Header Subaru 2002-2014 WRX / 2004-2021 STI | 113026 vendor_ARP Each engine vent port receives

Each engine vent port receives its own connection to the AOS

resulting in a lightweight yet rigid hood that is ideal for both street and track applications

AVCS on intake only

The design of the lip allows for an increase in front down force

delivering instant power gains

GrimmSpeed Unequal Length Header Subaru 2002-2014 WRX / 2004-2021 STI | 113026 vendor_ARP Each engine vent port receivesGrimmSpeed Unequal Length Header for your Subaru 04 21 STI and 02 14 WRX. Fitment: 2004 2021 Subaru STI 2008 2014 Subaru WRX 2002 2005 Subaru WRX 5MT (Requires STI Oil Pan and Pickup) 2006 2007 Subaru WRX (Requires STI Oil Cooler and Feed Pipe) Over the years, GrimmSpeed Engineers have proven that they are capable of manufacturing the highest quality, best performing exhaust components for the Subaru aftermarket. While they might not always be the