Vehicle Fitment
Fitment:
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Year: 2015, 2016, 2017, 2018, 2019, 2020, 2021
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Make: Subaru
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Model: WRX STI
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Chassis: VA
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Style: JDM CS Version 2 Side Skirt Extensions
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Placement: Rocker Panels
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Material: Carbon Fiber
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Finish: Gloss Carbon Fiber
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Included: Pair (Left & Right)
Replacement For 2015-2021 Subaru WRX STi | JDM CS Version 2 Style Side Skirt Rocker Panels Extension Pair ( Carbon Fiber )
Why These Carbon Fiber Side Skirts Are the Right Move
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JDM CS V2 Styling: Authentic Japanese-market inspired design
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VA-Specific Fitment: Designed for 2015–2021 WRX STI models
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Real Carbon Fiber Construction: Lightweight, rigid, and premium
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Aggressive Side Profile: Visually lowers the car without excess bulk
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Perfect with Full Aero Builds: Complements splitters and diffusers
Installation Overview
These side skirt extensions mount directly to the factory rocker panels using standard mounting hardware. Professional installation is strongly recommended — because carbon fiber deserves precision, not guesswork.
Ideal For:
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OEM+ and JDM-inspired STI builds
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Track-day and show cars
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Owners adding carbon fiber aero components
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Anyone who believes Subaru should have done this from the factory
Pair these with a carbon front splitter, rear diffuser, or wing to complete the CS-style look. Pro Street Online delivers the aero upgrades that turn good builds into great ones.
KayPak –
One of the best Carbon Fiber Kits on the market. Everything was a Perfect fit, the quality of the weave is amazing and I get compliments on the Carbon constantly. Easy to install!On top of that customer service was fantastic, quick responses to questions and beyond friendly.Would highly recommend. The price is also unbeatable!
Victor Perez –
Great fitment and carbon looks great although they could improve on the transition between the skirt and flared wing, there a noticeable transition that’s a eye sore
FFC –
I was a skeptic but this turned out to be an amazing buy. It was packaged very well can came with zero damage. Looks great, real carbon fiber, and installed in about 20 mins.
DOM –
Chilly Willy –
Painted black, removed rocker covers from the car and mounted these rocker extensions to plastic covers. They look great and mounted easy. You need to paint these when you get them.