I have seen my friend's front wheel on his Aprilia RS125, and it seems so light as it turns smoothly. He said he has been using this 6002LU bearings for his wheels. I went to a bearing shop but there's no LU code on their stock. i bought 6302 C3 because that's what they got and it spins freely unmounted. I buy it at Rm9/bearing.
When i'm at the bike shop, i found the LU coded bearings, and it doesn't feels like a high speed bearing. I bought it also for comparison. This is Rm15/bearing.
On the left is the KOYO C3 bearing whereas on the right is NTN LU one.
i have weighted both of them using a digital scale, and both weight at 80grams.
hurm...which is actually better?
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