Grimmspeed Catted Downpipe (08-14 WRX & 2008+ STI)

Black ceramic-coated finish option 304 stainless steel construction 1/2" thick 3D contour flanges 3" piping diameter 3D CAD designed to determine the contours and clearance from the firewall  Divorced wastegate design for optimal flow Designed with a secondary O2 bung for those adding a wideband O2 sensor FARO arm design Built-in high-flow 300-cell metallic substrate catalytic converter Expertly TIG-welded Includes new exhaust gaskets and hardware included for the installation  Made in the USA