I haven't seen or read much about our choices to mount things to the new Lock & Ride MAX bed rails. I used 3/8" carriage bolts to secure my new toolbox which worked well, but the square under the round head protrudes slightly above the rails. This wasn't an issue for the toolbox because of the foam underneath the box. The only other things I have found was T-Nuts from Thumper Fab and Lock & Ride MAX anchors from Koplin. Interesting enough Kolpin says they work for the Expedition but not for the Ranger 1500 XD. I'm sure they are the same rail so they should work fine. Seems to me Polaris is missing an opportunity to have more offerings for their rail system. Has anyone found anything else to use?