Fitment Information: 2015-2021 Subaru WRX 2015-2021 Subaru STI Features: The Verus Engineering Hood Louver Kit helps reduce engine bay heat and pressure by allowing air to evacuate through the openings from under the hood. These hood louvers help increase cooling stack efficiency, underhood component longevity, as well as bump the front end downforce. Optional wickers are included with each kit to improve the effectiveness of the louvers.Verus designed these louvers to be installed on the OEM hood due to the unit already being extremely lightweight. This resulted in a product that retains the hood's structural skeleton throughout the years of use. Perfect kit for those of you looking for a purposefully placed, built, and tested louver kit that, when paired with an OE hood, weighs less than most carbon vented hoods. Helps reduce under the hood pressure and temperature Black powder coat finish for durability 1.6mm thick 6061 Aluminum construction CNC Laser cut CFD Optimized design Stainless Steel Flush Clinch Studs and Serrated Nuts included allow vents to be easily removed for cleaning Wickers are included What's Included: (1) Right Hood Louver (1) Left Hood Louver (1) Right Wicker (1) Left Wicker (2) Cut-Out Install Templates Small Verus Vinyl Sticker Install Hardware Kit