These Perrin window vents for your Subaru WRX/STI can be used in several ways. At the track to cool down the cabin without AC use, daily driving to eliminate wind turbulence or if you have pets in the back seat, or stand out from the others at a show.

The window vents are NOT permanent when installed. They easily slide into the factory window track, the window slides into a channel along the bottom of the vents for stability, and to remove you simply lower the window and angle the vent downwards and out. Installation instructions included.