Can i trust these on a 01 xc sp 600?

http://www.powersport-parts.com/product_de...oduct_id=242763

i would love some input

I wouldn't use them unless they are a name brand like NTN. I have had real good luck with their "formula" blue seal bearing. I've had real poor luck with the under $5 specials.
http://www.hiperf.com/cgi-bin/sh000001.pl?...d652#a590_2d652
Looks like they are out right now, maybe call Wahlracing.com, there web site does not show all the stuff they have. Wahl also has a lower left drive shaft brg, I think it is 05-811, no grease noles, but I just pop a seal off the inside of the speedo housing, it's $12 instead of $30 for a Polaris one.