They don't have them on the website. I called them about 6 months ago because the speherical bearings in my plates wore out and I needed new ones and they said that they weren't sure if they could get the bearings seperately but they could get the whole assembly. They eventually did get just the bearings for me though. I dont know if that has changed in the last 6 month or if they were wrong, but that's what they told me.