Tomioka Racing Subaru High Flow Catted Downpipe for WRX/STi is a high quality 3-inch downpipe at an affordable price. The downpipe features 200-cell with ceramic substrate catalytic converter and ported flanges for a quicker and faster exhaust air flow compared to the standard OEM downpipe. Each downpipe is constructed from SUS304 grade stainless steel that gives it shine and durability that will last for years to come. Installation is a snap! The downpipe will fit like your OEM downpipe and comes with all the necessary hardware and gasket. The downpipe even comes with two EGT sensor bung in case you are running a gauge set-up on your car. If you're looking for the best bang for your buck down pipe look no further!