Originally Posted by
Troul
Did the bicycle come with or call out all the necessary hardware that was not installed at some point, & get deep sixxed during the assembly? If that is the case, I'd contact them to make it right.
It should have come with the proper hardware. They use Syntace mounts with a 15mm thickness so they should have had the correct Shimano bolts for the rear caliper. I am assuming that the mounting plate to caliper pin got lost during assembly at some point. Yes, I will be going back to the builder for the missing hardware.
BTW, do the Shimano GRX calipers come with the mounting plates attached or are these bike and frame specific and selected at installation time? The rear mounting plate on mine says "R160 FM1.1"