GrimmSpeed 3in Downpipe to Stock Cat Back Adapter Subaru WRX 02-21 / STI 04-21 | 077044

Purchased this adapter to install my 3" cat back exhaust from Remark to stock OEM downpipe. This wasn't the right part for that application so the team at IIR made the return super easy. They are top notch. The part itself was very high quality and awesome price. It came with all the parts needed. If you need one, be sure to get a new donut gasket just to make sure.

Quite a sturdy adapter, also comes with a nice finish coating so very unlikely to develop corrosion in any hurry. gaskets fit snug and properly sized. This thing doesn't flop around in the bore so it really seems like a seamless part.

No additional or reduced noise really.

Had two different retailers tell me I didn't need this to connect my Grimmspeed j-pipe to the AWE Track catback, so I didn't order it. Got the exhaust installed and had a leak between the two. Ordered this and the leak is gone.

If you have a aftermarket DP, you have to get this if you have a stock mid pipe.

Don’t forget to order it if your using The oem exhaust

Fixed the exhaust leak I had due to my invidia dp and cobb catback on my 02 wrx not mating properly. Had a pretty annoying exhaust leak but this fixed it

Forgot I need for a build and it arrived very quickly.

Solid part, great machining, comes with hardware. Lines up nice.

No leaks worked as it should

I have a 2015 WRX. This fits well with my Grimmspeed jpipe to oem catback or any 2.5 in catback.