2018 - 2021 McLaren 600lt Carbon Fiber Under Rear Diffuser Undertray

Enhance the aerodynamic efficiency and rear-end protection of your McLaren 600LT with this Carbon Fiber Under Rear Diffuser Undertray. Designed to complement your existing diffuser setup, this undertray optimises airflow beneath the vehicle while adding structural rigidity and an aggressive visual finish.

Constructed from lightweight, high-strength carbon fibre, this undertray offers a sleek performance upgrade that fits perfectly with the 600LT’s aggressive styling. Ideal for track use or premium street builds, it delivers functional aero with high-end appeal.

Fitment: 2018–2021 McLaren 600LT
Package Content: One carbon fiber under rear diffuser undertray

We offer free shipping within the Continental U.S, for Headlights, Taillights, DRLs and Carbahn controllers. For Exterior and Performance products, standard shipping rates apply, We also ship worldwide, with rates automatically calculated at checkout.

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: Additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North America, European, etc.)
• DRLs, Taillights and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.

Please note:
We do not have control over vendor, manufacturer or delivery service time frames, which may cause delays in components and shipment.