Invidia introduces yet another new developed downpipe. This new downpipe utilizes the same characteristics as all the previous created downpipes but now in a catted version. The new version of the downpipe is relatively a hybrid version one can say that was combined with the V2 and V3 with the added catalytic converter feature for your WRX. The V4 downpipe is constructed with a divorced bellmouth which separates exhaust gases that exit out through the cat and downpipe. With this in mind you will not only have a more efficient HP and torque gain but a more cleaner and air safe vehicle.

Features:

-SUS 304 stainless steel

-Bellmouth with split for more efficiency

-3" mandrel bent

-Polished bellmouth for longer lasting

**New gaskets are suggest when purchasing the downpipe