Perrin PSP-BDY-402BK Gurney Flap for 2015-21 Subaru WRX/STI Low-Profile Wing

Vehicle Fitment

• 2015-2021 Subaru WRX (low-profile OEM spoiler)
• 2015-2021 Subaru WRX STI (low-profile OEM spoiler)

Features

• Aerodynamic gurney flap designed to increase rear downforce
• Adds aggressive visual styling to the rear trunk spoiler
• Constructed from lightweight 10g 6061-T6 aluminum for strength and corrosion resistance
• Precision laser-cut with slotted holes for perfect alignment
• Semi-gloss black finish complements factory colors
• Improves aerodynamic efficiency by reducing lift at speed
• Includes installation hardware and a threadsert tool
• Direct bolt-on modification for compatible low-profile spoilers

Specifications

• Part Number: PSP-BDY-402BK
• Material: 10g 6061-T6 aluminum
• Finish: Semi-gloss black powder coat
• Orientation: Rear spoiler gurney flap
• Fitment Type: Low-profile OEM wing/spoiler
• Installation: Requires drilling into existing spoiler
• Performance: Increases downforce (e.g., ~35 lbs @ 75 mph, ~62 lbs @ 100 mph) :contentReference[oaicite:0]{index=0}

Included Components

• 1x Perrin Gurney flap (PSP-BDY-402BK)
• 1x Threadsert installation tool
• All necessary mounting hardware
• Installation instructions

Product Description

The Perrin PSP-BDY-402BK Gurney Flap is a purpose-built aerodynamic accessory for Subaru WRX and WRX STI models equipped with the low-profile OEM rear spoiler from 2015 through 2021. Crafted from durable 10g 6061-T6 aluminum with a semi-gloss black finish, this flap adds a subtle yet aggressive styling cue while offering improved performance by reducing lift and adding measurable downforce at higher speeds - ideal for daily drivers and spirited weekend use alike.

Installation is straightforward with the included hardware and threadsert tool, though the design does require drilling into the existing spoiler for a secure fit. The Perrin gurney flap enhances aerodynamic efficiency and visual appeal without significantly impacting rear visibility, making it a popular upgrade for enthusiasts who want functional performance with clean aesthetics.