The Extreme Turbo Systems 2015-2016 WRX High Flow Cat Down Pipe is a true 3.0" SS J-Pipe/Downpipe. It utilizes factory fitment with a rear 90 degree bung to prevent a check engine light.
Features:
3.0" SS Construction
Mandrel Bent
Factory Replacement
Supports up to 750WHP (Stock turbo capabale of ~half of that)