Porsche Panamera 971 (2017+) Prepreg Dry Carbon Fiber Rear Diffuser

Engineered for Porsche Panamera 971 (G2, 2017+) owners who demand a track-grade upgrade for their luxury GT sedan, this Prepreg Dry Carbon Fiber Rear Diffuser transforms the rear of your Panamera with motorsport-inspired aggression while optimizing aerodynamic balance. Manufactured in Europe and quality-controlled by BYC Performance, this Porsche Panamera carbon rear diffuser bolts directly to OEM mounting points — no cutting, no drilling, no modification required.

If you are building a serious Porsche Panamera tuning project and need a part that exceeds the factory plastic diffuser in both performance and finish, this dry carbon rear diffuser is built for you. Autoclave-cured prepreg carbon fiber is noticeably lighter than wet-lay carbon parts, with far superior structural integrity and outstanding long-term UV resistance. Engineered to complement the 971's drivetrain portfolio — 2.9L V6 biturbo (4S), 4.0L V8 biturbo (GTS / Turbo), and Turbo S E-Hybrid (V8 + electric, 700 hp combined) — the aggressive diffuser geometry visually reinforces the Panamera's performance character.

Key Features

• Prepreg Dry Carbon Technology: Pre-impregnated carbon plies cured in an autoclave under high heat and pressure ensure homogeneous resin distribution and a more consistent weave.
• GT Sedan Aesthetic: Aggressive diffuser channels integrated into the Panamera's fastback line; noticeably lighter than the factory plastic part.
• Race-Grade Strength: Carbon fiber offers very high strength for its weight. Resists stone chips and light contact.
• Aerodynamic Performance: Optimized diffuser channels accelerate underbody airflow and support rear-axle grip at higher speeds.
• 2x2 Twill Carbon Weave: Authentic carbon fiber pattern under a high-gloss UV-protective clear coat.
• Direct OEM Fit: Plug & play installation on factory Porsche Panamera 971 (2017+) mounting points.
• UV & Chemical Protection: Long-life clear coat protects against fading, cracking, fuel splash, and road tar.

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
• 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 Panamera 971 carbon rear diffuser fits the following models:

• Porsche Panamera 971 Sedan (2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024) — all trims
• Porsche Panamera 4 / 4S 971 — 2.9L V6 biturbo (440 hp)
• Porsche Panamera GTS 971 — 4.0L V8 biturbo (480 hp)
• Porsche Panamera Turbo / Turbo S 971 — 4.0L V8 biturbo (550-630 hp)
• Porsche Panamera Turbo S E-Hybrid 971 — V8 biturbo + electric (700 hp combined)
• Porsche Panamera 4 E-Hybrid / 4S E-Hybrid 971 — V6 + electric
• Porsche Panamera Sport Turismo 971 (2018+, wagon body) — shares the rear bumper lower section
• Compatible with both pre-facelift (2017-2020) and post-facelift (2021+) models

Important notes:

• This product is NOT compatible with the previous-generation Porsche Panamera 970 (2009-2016). 970 and 971 have different chassis and rear bumper geometry.
• Turbo / Turbo S exhaust outlets align with the diffuser cutouts; please confirm your exhaust configuration with a photo prior to ordering.

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

Installing the Porsche Panamera 971 carbon diffuser is a direct replacement of the factory part. Professional installation is recommended:

1. Raise the vehicle and remove rear bumper underbody screws.
2. Detach the OEM plastic diffuser from clips and bolts.
3. Test-fit the carbon diffuser for alignment.
4. Secure with supplied hardware to the manufacturer's recommended torque.
5. Verify exhaust tips are centered in diffuser cutouts.
6. Check park sensors and Sport Chrono exhaust valve harnesses where present.

Care & Maintenance

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

FAQ

Does this fit the Porsche Panamera 970 (2009-2016)?
No. The 970 and 971 have different chassis and rear bumper geometry.

Compatible with Sport Turismo (wagon) body?
Yes. The Panamera 971 Sedan and Sport Turismo share the same rear bumper lower section; the diffuser is OEM-compatible with both bodies.

Is there a difference between pre-facelift (2017-2020) and post-facelift (2021+)?
No. The 2020 mid-cycle refresh did not change the rear bumper lower geometry, so this diffuser fits both pre- and post-facelift Panamera 971.

Compatible with Turbo S E-Hybrid exhaust layout?
Yes. The Turbo S E-Hybrid's four corner round exhaust outlets align with the diffuser cutouts. Photo-confirm your exhaust before ordering.

Will rain damage dry carbon parts?
No. Autoclave-cured prepreg carbon is fully waterproof and weather-resistant.

Shipping time?
In-stock items ship within 1-3 business days via partner couriers. 1-2 day delivery across Turkey.

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

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 carbon parts, Audi RS carbon diffusers, BMW M carbon diffusers, Porsche 911 carbon spoilers, and many more high-quality carbon components.