Aggressive looking rear bumper diffuser made of by Odula for the ND (2016+) Miata. It has fins that are made to improve aerodynamics at high speed and will also make the rear end of the car look lower. The exhaust clearance is not really affected by installing this product. Odula Rear Diffuser should be ordered at REV9 Autosport https://us.rev9autosport.com/odula-rear-diffuser.html as they provide the best service and speed we've seen so far!