McLaren GT (2019-2024) Prepreg Dry Carbon Fiber Rear Diffuser

Engineered for McLaren GT (2019-2024) owners, this Prepreg Dry Carbon Fiber Rear Diffuser brings racing-grade carbon texture and aerodynamic aggression to McLaren's luxury grand tourer. Manufactured in Europe by BYC Performance, it bolts directly to OEM mounting points.

The McLaren GT, powered by a 4.0L twin-turbo V8 M840TE (620 hp), stands out as McLaren's most touring-focused and daily-friendly model — panoramic glass roof, practical luggage space, softer suspension. It shares the carbon MonoCell II monocoque with Sports Series but features its own body design. This carbon rear diffuser completes the GT's sophisticated lines with an aggressive carbon surface.

Key Features

• Prepreg (Dry) Carbon Technology: Autoclave-cured under high heat and pressure; a more consistent weave.
• GT-Specific Design: Diffuser channels tailored to the McLaren GT rear bumper geometry.
• High Strength: Very high strength for its weight.
• Aerodynamic Performance: Channels accelerate underbody flow, generating downforce at high speed.
• 2x2 Twill Carbon Weave: Under high-gloss UV-protective clear coat.
• Direct OEM Fit: McLaren GT rear bumper lower mounting points.
• UV & Chemical Protection: Long-life clear coat.

Prepreg (Dry) Carbon vs. Wet Carbon

• Autoclave-cured 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

Vehicle Fitment

• McLaren GT (2019, 2020, 2021, 2022, 2023, 2024) — 4.0L twin-turbo V8 M840TE, 620 hp

Important notes:

• McLaren GT is based on the Sports Series MonoCell II chassis but has unique body design. This diffuser fits the McLaren GT only.
• NOT compatible with 720S / 765LT (Super Series).
• NOT compatible with Sports Series (540C / 570S / 600LT) — different rear bumper geometry.
• NOT compatible with P1 or Artura.

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. Lift the vehicle; remove rear bumper underbody screws.
2. Detach the OEM diffuser from clips and bolts.
3. Dry-fit the carbon diffuser.
4. Secure with supplied hardware to the manufacturer's recommended torque.
5. Verify exhaust tips are centered in diffuser cutouts.

Care & Maintenance

Use pH-neutral car shampoo. Apply carbon sealant every 6 months.

FAQ

Compatible with 720S?
No. 720S Super Series uses a different chassis (MonoCage II) and rear bumper geometry.

Compatible with Sports Series (540C/570S/600LT)?
No. Although the GT shares MonoCell II with Sports Series, the GT body design is unique.

Compatible with P1 or Artura?
No.

Will rain damage dry carbon?
No.

Shipping?
In-stock items ship within 1-3 business days via partner couriers.

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

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon parts from leading European manufacturers. McLaren GT carbon diffusers, McLaren carbon parts, and more are in our catalog.