Aftermarket Side Skirts

The best aftermarket side skirts for the Subaru WRX and STI are the ones cut for your exact generation: carbon fiber CS, OE-STI, and VR2 styles for the 2015-2021 cars, OEM-style and CS carbon for the 2008-2014 cars, and CW-style carbon for the 2004-2005 GD chassis. Side skirts tie the front lip and rear diffuser together visually, and on wider aero setups they help manage airflow along the car's flanks.

Side skirts lower the car's perceived stance and connect the front and rear aero into one line, while extensions and splitters smooth airflow past the rocker panels and can reduce lift at speed. Materials split into genuine carbon fiber (twill, honeycomb, or plain weaves) and gloss black pieces that are tougher against daily scrapes. Styles here include CS, OE STI, VR2, VS, DM, and DT S207 designs, plus functional side splitters for track builds. Fitment is generation-specific: 2015-2021, 2008-2014, and 2004-2005 skirts are not interchangeable, so check your year and model before ordering.

JDMuscle supplies the Tanso carbon fiber range: CS, OE STI, VR2, and VS styles for the 2015-2021 WRX/STI, Spec CS carbon for the 2008-2014 cars, and carbon side skirts for the 2020+ Toyota Supra. The house brand's strength here is variety: multiple styles per generation so owners can match the skirt to their front lip and diffuser.

Seibon is one of the best-known names in carbon fiber body panels. Its skirts cover the full WRX/STI timeline, from CW-style carbon for the 2004-2005 cars and CS carbon for the 2008-2014 cars to OE-style carbon for the 2015-2021 generation.

OLM targets the value end of Subaru styling, with DT S207, DM, and CS style side skirts for the 2015-2021 cars in gloss black and carbon fiber finishes. OLM parts are popular with owners who want the look of special editions like the S207 without the special-edition price.

Verus Engineering takes the functional route: the Verus CF composite side splitter kit for the 2015-2021 WRX/STI is an aero-engineered piece aimed at track use, where managing underbody airflow matters more than show styling.

A popular pick is the JDMuscle Tanso carbon fiber CS style side skirts for the 2015-2021 generation. Related collections: Subaru WRX/STI Side Skirts and Exterior Trim. For the full aero picture, read Aero & Aesthetics: Body Kits and Spoilers for the 2022 WRX/STI.

Frequently asked questions

Do side skirts fit across different WRX generations?

No. Skirts are cut for specific generations: 2015-2021, 2008-2014, and 2004-2005 pieces are not interchangeable. Always check your year and model against the product title.

Carbon fiber or gloss black: which should I choose?

Carbon fiber is lighter and shows the weave, but it can crack on hard impacts. Gloss black pieces are generally more forgiving for daily drivers that see steep driveways and speed bumps.

Are side skirts hard to install?

Most install with factory mounting points, clips, and screws, and fit well when made for your generation. A lift or jack stands make the job easier.

Do side skirts need to match my front lip style?

They don't have to, but matching styles (CS skirts with a CS lip) gives the cleanest look. Mixing a splitter-style skirt with a gloss black lip is common too.