McLaren 600LT (2018-2020) Prepreg Dry Carbon Fiber Rear Bumper

Engineered for McLaren 600LT Sports Series Longtail (2018-2020) owners, this complete Prepreg Dry Carbon Fiber Rear Bumper combines aggressive Longtail aero character with track-grade material quality. Manufactured in Europe to factory-spec mounting tolerances and quality-controlled by BYC Performance, this McLaren 600LT carbon rear bumper bolts directly to OEM mounting points.

Optimized heat/aero openings for the 600LT's 3.8L V8 twin-turbo (600 hp) top-exit exhaust and aggressive Longtail diffuser fin geometry preserve the factory 600LT character while adding premium carbon detail.

Key Features

• Prepreg (Dry) Carbon Technology: Autoclave-cured under high heat and pressure.
• Longtail-Specific: Complete rear bumper designed for 600LT top-exit exhaust + extended rear deck.
• Aggressive Diffuser Fins: Manages underbody airflow at high speeds.
• High Strength: Very high strength for its weight.
• 2x2 Twill Carbon Weave: Glossy pattern under UV-protective clear coat.
• Direct OEM Fit: Bolts to factory 600LT rear bumper mounting points.

Prepreg (Dry) vs. Wet Carbon

Prepreg carbon is autoclave-cured under high heat & pressure, a more consistent weave, a controlled resin ratio — the production method widely chosen in motorsport.

Vehicle Fitment

• McLaren 600LT Coupé (2018-2020) — 3.8L V8 twin-turbo, 600 hp, Longtail aero, top-exit exhaust
• McLaren 600LT Spider (2019-2020) — 3.8L V8 twin-turbo, same rear bumper, compatible

Important notes:

• NOT compatible with 540C/570S. They have non-Longtail rear bumper geometry.
• NOT compatible with 720S (different chassis platform - MonoCage II + different rear bumper).
• NOT compatible with 765LT (Super Series Longtail, different platform).

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

Complete rear bumper replacement requires professional installation.

1. Raise vehicle and remove OEM rear bumper hardware + clips.
2. Check exhaust and sensor connections.
3. Align and secure carbon rear bumper.
4. Verify top-exit exhaust outlets are aligned.
5. Check panel gaps.

Care & Maintenance

Wash with pH-neutral shampoo. Do not wash while exhaust is hot. Apply carbon sealant every 6 months.

FAQ

Compatible with 600LT Spider?
Yes. Spider shares the same rear bumper geometry as the Coupé.

Compatible with 540C/570S?
No. They use non-Longtail rear bumpers.

Compatible with 720S?
No. 720S Super Series uses a different chassis + rear bumper.

Compatible with 765LT?
No. 765LT Super Series Longtail uses a different platform.

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

Shipping?
Ships 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. Catalog includes McLaren 600LT carbon rear bumper, 600LT carbon aero parts, 540C/570S carbon parts, 720S carbon parts.