Hi guys, i was trying to search exhaust fitment between STi / WRX. I'm not sure if they are interchangeable between STi and WRX. So, what i would like to know is if I bought an exhaust that will originally fit WRX, will they also fit my STi ? That's what i would like to find out. I'm not sure what year of WRX will this exhaust fit into, but my STi is 2006. If they dont fit, which part are actually will prevent them from fitting

Thanks In Advance

 

All exhausts should be interchangable from a WRX to a STi. The exhaust layout is exactly the same on each car.

 

After i did my research, i found out that some of the exhaust for WRX wont fit STi due to the transmission size 5MT / 6MT. But Some exhaust does interchangeable between WRX and STi, but one question still remain is does the 2006 STi will have a problem fitting exhaust from a WRX due to the Rear Air Diffuser ??

 

once you get back to the rear end there are no fitment issues. The wrx and sti use the same muffler just with different exhaust tips on them..... The exhaust hangers are in the same place..... If it is an aftermarket exhaust you will need to be careful about where it sits in relation to the diffuser because the heat might melt the plastic but getting it on shouldn't be a problem