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

2011-2014 Subaru WRX/STI V1 Diffuser

2011-2014 Subaru WRX/STI V1 Diffuser - Main image
2011-2014 Subaru WRX/STI V1 Diffuser2011-2014 Subaru WRX/STI V1 Diffuser2011-2014 Subaru WRX/STI V1 Diffuser2011-2014 Subaru WRX/STI V1 Diffuser2011-2014 Subaru WRX/STI V1 Diffuser
$520 $1040 In stock

Category: Subaru

CURRENTLY OUT OF PRODUCTION

Designed for the 2011–2014 Subaru WRX / STI (Sedan Only)

🔧 Direct Fitment
Engineered to mount directly onto the OEM rear bumper of 2011–2014 WRX and STI sedan models with no cutting or trimming required.

🛠️ Material
Built from aerospace-grade lightweight aluminum to ensure strength, durability, and longevity under daily or track use.

⚙️ Finish & Build Quality
Fully CNC’d and professionally powder coated in gloss black for a clean, aggressive finish. Pre-drilled for ease of install.

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
Ships with all necessary mounting hardware.
Professional installation is highly recommended.

💨 Why Add a Rear Diffuser to Your WRX/STI?
This diffuser enhances your WRX/STI’s rear-end styling while optimizing underbody airflow. The result is improved aerodynamics, reduced turbulence, and a track-inspired aesthetic that stands out on the street or at the show.

    Confirmed exhaust fitment: 

    • Q300

    • N1 DUAL/SINGLE

    •Nameless Performance

    • Tomei

    • OEM/SPT

    PLEASE EMAIL US TO VERIFY WHICH EXHAUST YOU HAVE.

    Customer Reviews (4.8 / 5 · 5 reviews)

    Sebastian ★★★★★

    Bolted right up to the factory holes on my 2013 sedan bumper, no drilling or trimming needed. Fitment was way tighter than I expected for an aftermarket piece. Just wish it wasn't out of production already, since I'd grab another.

    Harper ★★★★★

    Wasn't sure anything aftermarket would line up cleanly on my 2013 sedan, but this bolted straight onto the OEM rear bumper with no drilling or trimming. The fiberglass has a couple of tiny pinholes if you get close, though honestly nobody's crawling under my car to check. Just annoyed it's out of pr

    Eli ★★★★★

    Bolted it straight onto the factory rear bumper with zero drilling, and the direct fitment is exactly as advertised. The sedan-only design hugs the lines perfectly and gives the back end a much more aggressive stance without looking overdone.

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