3 pieces rear diffuser made by Selfish of Japan for the ND (2016+) MX-5 Miata. It has a middle section covering the factory plastics as well as 2 side diffusers going on both sides of the said section.
Selfish offers this component in FRP, twill wet carbon fiber or forged carbon fiber.

Selfish is no longer providing clear coat on their carbon fiber products. These products will require clear coat before installation.

DISCONTINUED AND NO LONGER AVAILABLE.
Selfish Rear Diffuser should be ordered at REV9 Autosport https://rev9autosport.com/selfish-rear-diffuser.html as they provide the best service and speed we've seen so far!