Rear diffuser with aerodynamic fins made by Fujimura Auto for the ND Miata. This rear diffuser will not only dress up your Miata and look great, it also has fins that will help stabilize airflow through the rear of the car. Fujimura Rear Diffuser should be ordered at REV9 Autosport https://us.rev9autosport.com/fujimura-rear-diffuser.html as they provide the best service and speed we've seen so far!