Porsche 911 (991 / 991.2, 2012-2019) Prepreg Dry Carbon Fiber Rear Bumper & Diffuser

Engineered for Porsche 911 991 / 991.2 Coupé owners, this European-made Prepreg Dry Carbon Fiber Rear Bumper and Diffuser brings race-derived aggression to the street and replaces the painted plastic OEM rear bumper with a single integrated carbon shell. Manufactured to factory-spec mounting tolerances and quality-controlled by BYC Performance, this Porsche 911 carbon rear bumper and diffuser bolts directly to OEM mounting points — no cutting, no modification required.

The one-piece bumper + diffuser body eliminates panel seams and joints, delivering pure motorsport aesthetics that complement the rear-engine flat-6 heritage of the 991/991.2. From the Carrera 3.4L/3.0L turbo six to the 580 hp Turbo S and 500 hp GT3 NA flat-six, this set brings GT-style aggression to the full range. Autoclave-cured dry carbon is noticeably lighter than wet-lay carbon parts.

Key Features

• Prepreg Dry Carbon Technology: Autoclave cure under high heat and pressure; a more consistent weave, even resin distribution.
• One-Piece Bumper + Diffuser: Integrated body eliminates panel gaps and seams.
• Lightweight: Noticeably lighter than the OEM painted plastic rear bumper — beneficial for the rear-biased 911 weight distribution.
• Aerodynamic Diffuser Channels: Accelerate underbody airflow and generate downforce at speed.
• 2x2 Twill Carbon Weave: Authentic carbon pattern under a high-gloss UV-protective clear coat.
• Direct OEM Fit: Plug & play on 991 and 991.2 Coupé rear panel mounts.
• Exhaust Compatibility: Cutouts for Carrera dual outlets and Turbo / GT3 outlets (specify variant).

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

Most aftermarket carbon parts are made using wet lay-up, where resin is applied by hand and cured at room temperature — leaving air voids and inconsistent weight. 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 carbon rear bumper and diffuser fits the following models:

• Porsche 911 Carrera / S / 4 / 4S 991.1 Coupé (2012-2016)
• Porsche 911 Carrera GTS 991.1 Coupé (2014-2016)
• Porsche 911 Turbo / Turbo S 991.1 Coupé (2013-2016) — different exhaust cutouts, specify variant
• Porsche 911 Carrera / S / GTS 991.2 Coupé (2016-2019)
• Porsche 911 Turbo / Turbo S 991.2 Coupé (2016-2019) — different exhaust cutouts, specify variant

Important notes:

• GT3 / GT3 RS / GT2 RS factory rear bumper geometry is different — this kit is designed for Carrera/Turbo bodies.
• Cabriolet and Targa rear panel geometry is largely compatible but confirm with BYC before ordering due to top mechanisms.
• 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. Raise the vehicle and remove the rear bumper underbody screws and lamp connectors.
2. Detach the OEM bumper from its clips and transfer PDC sensors to the new carbon bumper.
3. Test-fit the carbon bumper and diffuser, verify panel gaps.
4. Secure with supplied hardware to the manufacturer's recommended torque.
5. Confirm exhaust tips are centered in diffuser cutouts.
6. Professional installation is strongly recommended; PDC calibration may be required.

Care & Maintenance

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

FAQ

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

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

Compatible with GT3 / GT2 RS?
No. GT3, GT3 RS, and GT2 RS have unique factory rear bumper architecture.

Compatible with Cabriolet and Targa?
Carrera Cabriolet and Targa rear panels are largely compatible, but confirm with BYC via VIN and photos before ordering.

Different Carrera and Turbo exhaust outlets?
Yes. Turbo / Turbo S has different exhaust positioning vs. Carrera; specify trim when ordering.

Will PDC sensors still work?
Yes. Existing OEM sensors transfer to the new carbon bumper.

Shipping time?
In-stock items ship in 1-3 business days. Oversized item — shipped via partner couriers.

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.