From the factory, the rocker below the IS's doors is flat painted plastic that reads as dead space between the wheels.
A Feral Auto design, not a copy of any Lexus part, built from 3K premium carbon fiber and shaped to sit tight against the factory rocker so the car reads lower without looking like something was bolted on. Sold as a matched pair, driver and passenger side.
Pairs with the Carbon Fiber Roof Spoiler and Carbon Fiber Rear Diffuser, which fit the same year range, and with the 2026+ Carbon Fiber Front Spoiler. All five carbon pieces come together in the Carbon Aero Bundle Kit for the 2026-2027 IS350 F-Sport and F-Sport Design. The same skirts in FRP cost less and ship primed for paint.
Fits the 2021-2025 Lexus IS300 and IS350 (Base and F-Sport), the 2022-2025 IS500, and the 2026-2027 IS350 F-Sport and F-Sport Design.
Why Carbon Fiber
Carbon fiber earns its place over factory plastic on three counts. It holds a crisp edge where plastic softens and rounds off. It resists the flex and sag that makes a long lower part look tired after a season. And the weave is the finish itself rather than a coating applied over it, so a scuff doesn't expose a different color underneath.
Side skirts are the longest single part you can change on this car. A wave or a sag anywhere along that run reads from fifty feet away, which is why rigidity is the entire job here.
Please note: Matte, Honey Comb, and Forged Carbon finishes are non-refundable once the order has been placed.
Browse all Feral Auto Lexus IS aero parts.
Free standard shipping on all orders delivered within the 48 contiguous United States.
In-stock parts are prepared for shipment within 1–3 business days. If a part is not currently in stock, the lead time shown under the Add to Cart button applies. Once a shipment leaves our facility, most orders arrive within 3–7 business days, and freight shipments within 5–10 business days.
We also ship to Alaska, Hawaii, U.S. territories, APO/FPO/DPO addresses and internationally by quote — contact us before ordering. Full details in our Shipping policy.
Returns require our approval. Contact us within 5 days of receiving your item to request one. Approved returns are subject to a 30% restocking fee plus return shipping, and original shipping is non-refundable.
Items that have been installed, used or modified cannot be returned. Non-standard carbon finishes are non-returnable once the order has been placed.
If we shipped the wrong part or it has a manufacturing defect, there is no fee and we cover return shipping. Damage in transit must be reported within 24 hours of delivery — see our Shipping policy. Carbon components carry a 6-month structural and finish warranty. Full details in our Refund policy.
