RZR XP 4 1000 ARP Threaded Studs December 3, 2015 Has anyone installed the threaded ARP studs from Maxwell? I have 4 on the passenger side that are spinning in the hub and 1 on the driver side. Curious if there is drilling required or you just tap them. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related