The Mazda Miata's design - lightweight, two-door, and convertible - makes it a joy to drive, but also leaves the chassis more susceptible to flex. One often-overlooked contributor to that flex? The soft factory rubber door bushings. Our upgraded synthetic elastomer door bushings offer an easy, high-impact solution. In just minutes, you can swap them out for a tighter, more solid fit. The difference is immediateclose the door and youll feel the enhanced chassis rigidity. It's a small mod that makes a big difference in the way your Miata feels.