Porsche 911 991 / 991.2 Prepreg Dry Carbon Fiber GT3 Spoiler (V2)

Engineered for Porsche 911 991/991.2 owners who want a track-DNA rear profile and measurable high-speed downforce, this Prepreg (Dry) Carbon Fiber GT3 Spoiler transforms the engine deck of your 911. Manufactured in Europe to factory-spec tolerances and quality-controlled by BYC Performance, this Porsche 911 carbon GT3 spoiler bolts directly to OEM mounting points — no cutting, no drilling.

The 911 GT3's naturally-aspirated flat-6 character (991.1 GT3: 475 hp / 3.8L NA, 991.2 GT3: 500 hp / 4.0L NA, 991.2 GT3 RS: 520 hp / 4.0L NA) defines the modern track 911, and this spoiler channels that spirit. This V2 version differs in profile from our sister GT3 Spoiler SKU — featuring a more aggressive wing line and lip curl. It serves both 991 GT3 owners as a replacement/upgrade AND 991/991.2 Carrera, GTS, Turbo and Turbo S owners chasing the GT3 look. Autoclave-cured prepreg construction is noticeably lighter than the OEM plastic spoiler.

Key Features

• Prepreg (Dry) Carbon Technology: Autoclave-cured under high heat and pressure — homogeneous resin, a more consistent weave.
• GT3-Style Wing Profile (V2): Different from our sister GT3 spoiler SKU — higher angle of attack and more aggressive tip curl.
• Race-Grade Downforce: Optimized profile contributes to rear-axle downforce at speed.
• Lightweight: Noticeably lighter than the OEM plastic spoiler.
• Race-Grade Strength: Carbon fiber offers very high strength for its weight.
• 2x2 Twill Carbon Weave: Authentic pattern under a high-gloss UV-protective clear coat.
• Direct OEM Fit: Plug & play installation on factory 991 / 991.2 engine deck mounting points.
• UV & Chemical Protection: Long-life clear coat against fading, fuel splash, and tar.

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

Most aftermarket carbon is made using wet lay-up, where resin is applied by hand and 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 GT3 carbon spoiler V2 fits the following models:

• Porsche 911 991.1 GT3 Coupé (2014-2016) — 3.8L flat-6 NA, 475 hp
• Porsche 911 991.2 GT3 Coupé (2017-2019) — 4.0L flat-6 NA, 500 hp
• Porsche 911 991.1 / 991.2 GT3 RS Coupé — 4.0L NA, 500-520 hp
• Porsche 911 991.1 Carrera / S / 4 / 4S / GTS Coupé (2012-2016) — visual + aero upgrade
• Porsche 911 991.1 Turbo / Turbo S Coupé (2013-2016) — visual + aero upgrade
• Porsche 911 991.2 Carrera / S / 4 / 4S / GTS Coupé (2016-2019) — visual + aero upgrade
• Porsche 911 991.2 Turbo / Turbo S Coupé (2016-2019) — visual + aero upgrade

Important notes:

• NOT compatible with Porsche 911 992 (2020+).
• NOT compatible with Porsche 911 997 (2005-2012).
• Cabriolet and Targa have different rear deck geometry; this spoiler is for Coupé only.
• A different GT3 Spoiler variant (classic profile) is also available in our catalog — choose based on profile preference.

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. Clean the engine deck mounting area thoroughly.
2. Dry-fit the spoiler and verify symmetry of the tips.
3. Secure with supplied hardware (bolts + 3M VHB tape backing).
4. Torque bolts to the manufacturer's recommended torque.
5. Avoid washing for 48 hours to allow adhesive cure.

Care & Maintenance

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

FAQ

Does this fit the Porsche 911 992?
No. The 992 (2020+) has different engine deck geometry.

Does this fit the Porsche 911 997?
No. The 997 (2005-2012) is the previous generation.

How is this different from the sister GT3 Spoiler product?
This V2 version has a different wing profile and tip curl — optimized for owners wanting a more aggressive look.

I own a Carrera or Turbo — can I install the GT3 spoiler?
Yes. 991/991.2 Coupé engine deck geometry is shared across trims. Visual + aero upgrade for Carrera, GTS, Turbo and Turbo S.

Compatible with Cabriolet or Targa?
No. Cabriolet and Targa have different rear deck geometry. Coupé only.

Does it actually add high-speed stability?
Yes. The optimized profile contributes meaningful rear downforce at speeds above 180 km/h.

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

Warranty?
BYC Performance offers a 12-month manufacturer warranty.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes Porsche 911 carbon parts, Porsche carbon spoilers, Audi RS carbon diffusers, BMW M3 carbon hoods, and many more high-quality carbon components.