Mazda Miata Rain Rail 1990-2005 - SALE!!!
This is the plastic "rain gutter" type piece that every Miata already has. It is located behind the top (you can't see it until you remove the top) and funnels the water that runs down between the top and the body of the car to drainage holes. If this piece is cracked or brittle, serious water damage can occur in your Miata.