Scion FRS TRD V1 Side Skirt Extensions Review: Style, Fitment & Real-World Performance

The Scion FRS (along with its Subaru BRZ and Toyota 86 siblings) has long been a favorite among enthusiasts who value lightweight chassis balance and endless customization potential. While many owners focus on power upgrades or suspension work, the visual impact of a well-chosen aero kit can transform the car’s entire personality. Among the most popular exterior mods are side skirt extensions, and the TRD V1 design stands out for its OEM-inspired aggression and functional styling.

In this review, we take a close look at the Scion FRS TRD V1 side skirt extensions. We’ll examine the build quality, installation process, and how they complement other aero pieces like front splitters and rear diffusers. Whether you’re building a track-focused machine or a weekend show car, understanding what these extensions offer will help you decide if they belong on your build.

Design and Aesthetics: OEM+ Aggression

The TRD V1 side skirt extensions are designed to mimic the clean, factory-integrated look of Toyota Racing Development’s original parts. They feature subtle but purposeful lines that extend the visual length of the car and lower the side profile without being overly flashy. The extensions are crafted from durable polyurethane, which offers a good balance of flexibility and impact resistance—important for daily driving over uneven pavement.

When paired with a front lip and rear diffuser, these extensions create a cohesive aero package that reduces visual lift and gives the FRS a more planted stance. For owners who want to upgrade further, products like the 2017-2021 Honda Civic Type-R V2 Diffuser show how diffuser designs can vary by platform, but the TRD V1 side skirts remain a benchmark for the FRS community.

• Polyurethane construction resists cracking and is easy to paint to match your car's color.
• The design includes subtle ridges that channel airflow along the lower body, contributing to reduced turbulence.

Fitment and Installation: Straightforward DIY

One of the biggest concerns with aftermarket aero is fitment. The TRD V1 side skirt extensions are engineered to mount directly to the factory side skirts using existing holes and double-sided tape. Most owners report a near-bolt-on experience, with minimal trimming required only for cars with aftermarket side skirts or rocker panel damage.

Installation typically takes 1-2 hours with basic hand tools. The polyurethane material allows for slight bending to conform to the body lines, and the included 3M tape ensures a secure bond. For those who also plan to add rear spats, the 2022-2026 Subaru WRX T-Spec Rear Spat Extensions demonstrate a similar philosophy of using OEM mounting points for hassle-free installation.

• Clean the mounting surface thoroughly with isopropyl alcohol before applying tape.
• Use a heat gun or hair dryer to soften the polyurethane for better contouring in cold weather.

Performance and Functionality: More Than Just Looks

While side skirt extensions are often viewed as purely cosmetic, they do serve an aerodynamic function. By reducing the amount of air that flows under the car, they help lower front-end lift and improve high-speed stability. The TRD V1 design is no exception—its shape directs air away from the rear wheels, reducing drag and helping to keep the car planted during spirited driving.

That said, the gains are subtle and most noticeable on track or during aggressive cornering. For daily driving, the primary benefit is the lowered visual stance and the satisfaction of a complete aero package. If you’re looking for a more dramatic rear-end upgrade, consider the 2011-2014 Subaru WRX/STI V1 Diffuser, which offers a similar blend of style and function for a different platform.

• Combine with a front splitter and rear diffuser for maximum aerodynamic balance.
• Extensions alone will not drastically change fuel economy or acceleration.

Comparison with Other FRS Aero Options

The aftermarket for the FRS/BRZ/86 platform is massive, and side skirt extensions come in various shapes and materials. Compared to carbon fiber options, the TRD V1 polyurethane units are more affordable and forgiving if you scrape a curb or speed bump. They also match the factory paint better than unpainted ABS plastic parts.

For owners who want a more track-oriented look, aftermarket front winglets like the 2015-2021 Subaru WRX/STI V5 Front Winglets offer additional downforce but require more extensive mounting. The TRD V1 extensions strike a sweet spot for street-driven cars that still want a competitive edge at autocross events.

• Polyurethane is easier to repair than carbon fiber if damaged.
• TRD V1 extensions are compatible with most aftermarket front lips and rear bumpers.

If you're looking to elevate your Scion FRS's side profile with a clean, OEM-inspired upgrade, the TRD V1 side skirt extensions are a solid investment. They combine easy installation, durable materials, and a subtle aerodynamic benefit that complements other aero parts. For a complete look, pair them with a matching front lip and rear diffuser from the same family. Ready to start your build? Check out the 2017-2021 Honda Civic Type-R V2 Diffuser for inspiration on how a well-designed diffuser can complete your car's rear-end transformation.