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GrimmSpeed CATTED DOWNPIPE For 02-07 WRX/STI/FXT
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
Includes new exhaust gaskets and hardware included for the installation
Made in the USA
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