It does get distorted when you tighten the axle bolt. It goes between the 6005 and the 6004 on the sprocket side.
Nothing wrong with quality Japaneese bearings, its the Chineese and other crap thats junk. FWIW, I havn't changed a GasGas wheel bearing on my last two bikes. Steel wheel spacers, and pack the area between the bearing and seal full of grease. No pressure washer.
The washer should go shoulder up to the larger bearing ID. My '03 was missing this part.
I got Koyo from Japan. I just opened one up and no China.I purchased NSK's a well know Japanese brand. To my suprise when I took one out of its plastic bag I noticed it said NSK made in China.
I went to the bearing house to get some mains for my bottom end rebuild. I purchased NSK's a well know Japanese brand. To my suprise when I took one out of its plastic bag I noticed it said NSK made in China. When I returned it the sales rep told me not to worry that they sold lots of Chinese NSK's for industrial and snomobile applications ,and have had no complaints and that they will stand behind and warranty their product. I politely declined and told him that their warranty of a $25.00 dollar part did not mean much if I had to replace a complete bottom end as a result of a possible sub standard bearing and suggested that the bearing would make a fine coaster to place a lead painted glass of melamine tainted milk.I ended up getting some euro replacements from the dealer and was happy to pay twice as much. I'm not a biggot its just that I have no faith in either the word of a meally mouthed salesperson or manufactured products coming out of
China at this point in time.