Porsche 911 (991 / 991.2, 2012-2019) Prepreg Dry Carbon Fiber Side Skirt

Engineered for Porsche 911 991 / 991.2 owners, this European-made Prepreg (Dry) Carbon Fiber Side Skirt (OEM-style profile) directly replaces the factory rocker panel with a GT3-touched carbon equivalent. Quality-controlled by BYC Performance, this Porsche 911 carbon side skirt bolts directly to OEM mounting points — no cutting required. Our catalog includes two distinct 991 side skirt designs — this variant offers the cleaner, more street-oriented profile closest to the factory silhouette.

Side skirts manage wheel-arch airflow from the front axle toward the rear diffuser. This OEM-style profile preserves the factory door-line silhouette while bringing motorsport texture to the rocker. The same rocker geometry is shared across every Carrera Coupé trim from the 991.1's 3.4L/3.8L NA flat-six to the 991.2's 3.0L twin-turbo. Buyers wanting a deeper / more aggressive look should see our second 991 side skirt variant.

Key Features

• Prepreg (Dry) Carbon Technology: Autoclave cure under high heat and pressure; a more consistent weave.
• OEM-Style Clean Profile: Close to the factory silhouette; ideal for street-focused builds and daily use.
• Lightweight: Noticeably lighter than the OEM painted plastic rocker panel.
• Direct OEM Fit: 1:1 with 991 / 991.2 rocker mounting points; clip and hardware kit included.
• 2x2 Twill Carbon Weave: Deep carbon pattern under a high-gloss UV-protective clear coat.
• Aerodynamic Flow: Channels wheel-arch flow toward the rear diffuser.
• Sold as a Pair: Left and right skirts shipped as a set.
• Variant Note: For a deeper / more aggressive alternative see the 991 Side Skirt v2.

Prepreg (Dry) Carbon vs. Wet Carbon — Which Is Better?

Most aftermarket carbon parts are made using wet lay-up, with hand-applied resin cured at room temperature. Prepreg (dry) carbon:

• Cured in an autoclave under high heat and pressure → a more consistent weave
• A controlled resin ratio → lighter and stronger
• The production method widely chosen in motorsport
• Minimal UV fading over years of use

Vehicle Fitment

This Porsche 911 carbon side skirt fits the following models:

• Porsche 911 Carrera / S / 4 / 4S 991.1 (2012-2016) — Coupé, Cabriolet, Targa
• Porsche 911 Carrera GTS 991.1 (2014-2016)
• Porsche 911 GT3 991.1 Coupé (2014-2016)
• Porsche 911 Carrera / S / GTS 991.2 (2016-2019)
• Porsche 911 GT3 / GT3 RS 991.2 Coupé (2017-2019)

Important notes:

• Turbo / Turbo S wide-body rocker geometry may differ from Carrera; confirm trim before ordering.
• For a deeper / more aggressive look, see the 991 Side Skirt v2 alternative.
• NOT compatible with Porsche 992 (2020+).
• NOT compatible with Porsche 997 (2005-2012).

Technical Specifications

• Material: Prepreg Carbon Fiber (2x2 Twill Weave)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave black
• Origin: Europe

Installation Notes

1. Remove the OEM rocker panel by detaching clips and bolts.
2. Test-fit the carbon skirt and verify door-line alignment.
3. Use existing OEM clips plus the supplied hardware kit.
4. Torque bolts to the manufacturer's recommended torque.
5. Professional installation recommended.

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Keep pressure washer 30 cm away.

FAQ

Does this fit the 992 (2020+)?
No. 992-generation rocker geometry is different.

Does this fit the 997?
No. The 997 is the previous generation.

How is this different from the other 991 side skirt?
This variant has a cleaner, OEM-style street-oriented profile. For a deeper, more aggressive, aero-focused alternative see the 991 Side Skirt v2.

Compatible with Turbo / Turbo S?
Turbo wide-body rocker width may differ; confirm trim before ordering.

Compatible with Cabriolet and Targa?
Yes. 991/991.2 Carrera rocker geometry is identical across Coupé, Cabriolet, and Targa.

Sold as a set?
Yes. Left and right skirts ship as a pair.

Shipping time?
In-stock items ship in 1-3 business days. Delivered via partner couriers due to length.

Warranty?
12-month BYC Performance manufacturer warranty.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber parts from leading European manufacturers. Our catalog includes Porsche 911 carbon parts, Porsche 718 carbon diffusers, BMW M carbon components, Audi RS carbon spoilers, and more.