What size disc brake rotors are compatible with Rudy? August 10, 2021 20:45 Updated RockShox Rudy Ultimate XPLR is designed for 160mm direct flat mount brake rotors. You can run a 180mm rotor with an adapter. Related articles Rudy will be available in what aftermarket fork offsets? What is the chain gap adjustment for the XPLR rear derailleur with a 10-44T cassette? Do I need special caliper mounting bolts for this fork? My frame came with a ridged fork. Will adding a suspension fork void the warranty on my frame? Why did RockShox make the Rudy XPLR fork? Comments 0 comments Article is closed for comments.