GrimmSpeed Tumbler to Engine Gaskets (Pair) Subaru Subaru Invidia Regular N1 Muffler Catback

Invidia Regular N1 Muffler Catback for the 2002-2007 Subaru WRX/STI

if required

- Fits all Impreza/WRX/STi 1993-2014

and they will tell you that the best bang for the buck handling mod you can give your Subaru WRX is a high-performance swaybar

GrimmSpeed Tumbler to Engine Gaskets (Pair) Subaru Subaru Invidia Regular N1 Muffler CatbackGrimmSpeed Tumbler to Engine Gaskets GrimmSpeed offers an enlarged variation of the standard size OEM gasket. Why do you want the enlarged bore style vs. OEM style? The OEM gasket hole diameter is much smaller than the TGV itself so you are very limited on matching up the ports of the outlet of the intake manifold going into the inlet of the TGV. GrimmSpeed's gasket will not intrude into the flow path, restricting flow! FITMENT: Subaru STI 2004 2014