PLM Private Label Mfg. Power Driven K-Series downpipe set for K-Series Sidewinder turbo manifold and it's made for the Acura RSX / Honda Civic Si (EP3 Chassis.) This is a 3-inch downpipe that comes with a flex pipe.
The downpipe is designed with a 3-bolt exhaust flange connection and comes with a 4-bolt flange for the Turbo Outlet.