I can't order any NSR parts from a dealer here in the States. I would need to go through a local supplier like Carrozzeria or Red Line which at this point don't stock any NSR parts they only order them as requested. If I ordered I wouldn't get that part for three weeks at the best and the shipping would probably be as much as the part. I was at the local cycle shop anyway having some tires mounted and asked if I could try the F2 bearings for fitment. Now my bike will be ready to ride this weekend instead of sometime in March.
For me I like the fact that they are roller bearings which are much stronger then the OE ball bearings. And a stiff front end is a good front end.