The Perrin Catted Downpipe features a Divorced Wastegate and cat, this will seperate the exhaust gas exiting the downpipe, creating a smoother exhaust flow, thus resulting in more HP and Torque. The downpipe is constucted of 304 stainless steel 3" mandrel bent tubing and bolts up to any stock replacement catback or stock unit. Perrin has created a unique design that utilizes a rear slip joint so this downpipe can be used on 2002-2014 WRX / 2004-2020 STI alike! Gone are the days of not having a properly sealed exhaust system, this downpipe will allow you to ensure the proper lengths are had with whatever exhaust system you are using!
Perrin has taken another huge leap forward by using EPA approved catalytic converters! Proving that power can be had while keeping the environment sustainable and healthy!
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