For a strong boost in power, the Invidia Down Pipe offers an alternative to other power-boosting enhancements. To see just how much power the Invidia Down PIpe can produce, a quick look at its dyno chart shows it easily added several horse-power units to the stock exhaust system. Each Invidia Down Pipe features a large 4 inch stainless stell bellmouth to enhance power by freeing excess gas. it sports a one piece design, eliminating the need for the stock catalytic converter. In addition, each Invidia Down Pipe can be bolted up to any Invidia Exhaust or a stock exhaust for an easy installation.

Fits: Subaru WRX/STI 02+

Part # HS05SW1DPN