Originally Posted by qkbrian
No modifications required to get the Grabrail to work on your X1 though? I have 2 kayak attachments for roundbar and want to avoid buying a whole new system.
Correct, it snugged right up. You can feel the channel on the inside of the rails, and the regular Railgrab feet fit that profile perfectly. Provided you keep the crossbars mounted within the area that has the backside cutout, you should be just fine. I suppose if you wanted to be 100% certain of a proper fit, you could get the Thule 460 Podium setup, assuming your kayak setup also works on square bars, as most bike mounts will work on both round and square bars.