Invidia manufactures divorced wastegate down pipes with the finest 304 stainless steel metal available for your 2008-2014 Subaru WRX. Invidia's high flow catted downpipe features mandrel bends and is designed to be a direct replacement for your stock two piece restrictive WRX downpipe. Invidia's single piece design also makes it much easier to install! You will need to purchase a new turbo to downpipe gasket before installing this down pipe. There is is a one bung and two bung option available for this WRX downpipe. If you plan on installing an aftermarket wideband 02 sensor in the near future, such as one of these widebands located here, go with the two bung!