Porsche 911 (991 / 991.2 Turbo S & GT3 RS, 2013-2019) Prepreg Dry Carbon Fiber Side Air Duct

Engineered for Porsche 911 991 / 991.2 Turbo S and 991 / 991.2 GT3 RS owners, this European-made Prepreg Dry Carbon Fiber Side Air Duct replaces the OEM painted plastic intake duct in front of the rear fender with a carbon fiber equivalent. Quality-controlled by BYC Performance, this Porsche 911 Turbo S / GT3 RS carbon side air duct bolts directly to OEM mounting points — no cutting required.

On the Turbo S (3.8L twin-turbo, 580 hp), the side ducts feed clean air to the intercoolers; on the GT3 RS (4.0L NA, 500-520 hp), they manage engine intake and oil-cooler ventilation. This is a NARROW FITMENT — only Turbo S and GT3 RS bodies share the wide side intake geometry. NOT compatible with Carrera, Carrera S, Carrera GTS, standard GT3, or GT2 RS.

Key Features

• Prepreg Dry Carbon Technology: Autoclave cure under high heat and pressure; a more consistent weave.
• Narrow Trim Fitment: Only 991 / 991.2 Turbo S and 991 / 991.2 GT3 RS.
• Intercooler / Intake Efficiency: Preserves OEM duct geometry so cooling flow is unchanged.
• Direct OEM Fit: Plug & play with Turbo S / GT3 RS side intake frame.
• 2x2 Twill Carbon Weave: Deep carbon pattern under a high-gloss UV-protective clear coat.
• Lightweight: Noticeably lighter than OEM painted plastic.
• Sold as a Pair: Left and right ducts shipped as a set.

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
• Controlled resin ratio → noticeably lighter
• The production method widely chosen in motorsport
• Minimal UV fading over years of use

Vehicle Fitment

This Porsche 911 Turbo S / GT3 RS carbon side air duct fits the following models:

• Porsche 911 Turbo S 991.1 (2013-2016) — 3.8L twin-turbo, 560 hp
• Porsche 911 Turbo S 991.2 (2016-2019) — 3.8L twin-turbo, 580 hp
• Porsche 911 GT3 RS 991.1 (2015-2016) — 4.0L NA, 500 hp
• Porsche 911 GT3 RS 991.2 (2018-2019) — 4.0L NA, 520 hp

Important notes:

• NOT compatible with Carrera, Carrera S, Carrera GTS — these trims lack the wide side intake.
• Mostly compatible with the standard 911 Turbo (non-S) since fender geometry is shared; confirm with BYC by VIN before ordering.
• NOT compatible with the standard 911 GT3 (non-RS) — GT3 RS has wider body and different intake.
• GT2 RS (991.2) has a unique intake; confirm with BYC before ordering.
• 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. Detach the side intake frame clips in front of the rear wheel arch.
2. Carefully remove the OEM plastic duct.
3. Dry-fit the carbon duct and align.
4. Use existing clips and the supplied hardware kit.
5. Verify no airflow obstruction inside the duct path.

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Avoid spraying high-pressure water directly into the intake opening.

FAQ

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

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

Compatible with Carrera / GTS?
No. Carrera and GTS trims do not have the Turbo S / GT3 RS-style wide side intake.

Compatible with standard GT3?
No. This duct is built for the GT3 RS wide body. The standard GT3 lacks the same intake frame.

Compatible with standard Turbo (non-S)?
Standard 911 Turbo and Turbo S largely share side intake geometry; confirm with BYC by VIN before ordering.

Compatible with GT2 RS?
The GT2 RS has unique intake geometry; confirm with BYC before ordering.

Shipping time?
In-stock items ship in 1-3 business days.

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.