AFD Aero Kits, Exhausts & Wheel Spacers | Subaru, Honda, Toyota — Aero

2015-2021 Subaru WRX/STI V2 Diffuser

2015-2021 Subaru WRX/STI V2 Diffuser - Main image
$399.99 $799.98 In stock

Category: Subaru

Designed for the 2015–2021 Subaru WRX / STI

🔧 Direct Fitment
Engineered for a precise and secure fit to the factory rear bumper of the 2015–2021 WRX and STI models.

🛠️ Material
Made from aerospace-grade lightweight aluminum, offering a perfect balance of strength and weight savings.

⚙️ Finish & Build Quality
Fully CNC’d and professionally powder coated in gloss black. Pre-drilled mounting points ensure a seamless installation.

Made in USA
Proudly manufactured in the United States using high-grade materials and expert craftsmanship.

Production Lead Time
CNC items are made to order and have raw materials allocated to production once the order is placed. For concerns regarding current lead times, please review the CNC Products section in our Terms & Conditions.

🧰 Install-Friendly
Includes all required hardware for mounting.
Professional installation is highly recommended.

💨 Why Add a Rear Diffuser to Your WRX/STI?
Enhance rear-end styling while improving airflow and reducing drag. This diffuser not only sharpens your vehicle’s appearance but also boosts aerodynamic efficiency—giving your WRX or STI a performance edge both visually and on the road.

Customer Reviews (5.0 / 5 · 5 reviews)

Emily ★★★★★

Bolted this onto my 2021 WRX in about twenty minutes with basic hand tools, and the mounting points lined up with the factory bumper holes perfectly. The material feels genuinely rigid, not like the flimsy plastic I half expected at this price. Really cleans up the rear end.

Sophia ★★★★★

The fitment on my 2019 STI was dead on, no drilling or trimming needed at all. The material feels way more solid than the flimsy plastic I was expecting. Install took about an hour with basic hand tools.

Nicholas I. ★★★★★

Bolted right up to the factory holes on my 2019 STI with zero drilling, which was my main worry. The thing is solid too, no flex even at highway speed.