Equivalent to 63803 D28 2RS
"I haven't tested this bearing. But I had to change my bearings on my sram Roam 40 hub. A 6903 (17*30*7) and a 63803 D28 2RS which is mentioned as 63803 2RS in the manuals (including the sram manual . . . ) Beware the 63803 2RS is 26mm OD . . . So you need either the 63803 D28 2RS, or this one, which corresponds to a standard, and which will be much easier to find ... If that helps anyone . . I personally would have liked to have come across this comment ..."
