fstnsr,
The reference is to a page number (page 13-11), which is the page relating to removing/replacing the needle bearing. It's a reference to another page in the service manual, not for the part itself.
The only part #'s listed in the manual are service tools.
For part #'s you need to refer to the NSR Parts manual (double check all part #'s when ordering as accuracy in the parts manual is not a 100%. Parts have been superceded, or part's manual may be incorrect...).
You can find the parts manual here:
http://workshop.nsr-world.com/
_________________
Charles Gallant