Review on Upgrade Your Mazda MX-5 Miata With CravenSpeed'S USA-Made Door Bushings by Jeff Grindley

I got this for my 2019 MX-5 Miata RF. The doors would rattle when going over train tracks, etc. You do need a 10mm ratchet, and also a screwdriver. It is very easy to install, use ratchet to remove the screws (but keep them, they are used to attach the new bushings.) Then put the new bushings on, and use the screwdriver to reverse the screws before going clockwise, so you can be sure you have the threads aligned. Then use ratchet to get the screws closer to the bushings, just holding them snug, but allowing the bushings some play. Make sure your car is on a perfectly flat surface when installing. Close the car door, to get the actual placement of the bushings correct, slightly tighten the screws, close door again, repeat until bushings are fully screwed in. (There are a few youtube videos showing installation, i am not a "car guy", but i was really amazed at how easy they were to install.) They really work, i have forgotten how the doors rattle, and yes, believe it or not, the car does feel a bit stiffer when turning, etc. An awesome and easy to install upgrade to your Miata, and very well worth it. Definitely check out YouTube videos to see full install.