Mugen Seiki 15x21x4mm Bearing (2)
[MUGE0601]

Mugen Seiki 15x21x4mm Bearing (2)
Ernest Seow - Rating: 5 of 5 Stars! Sunday, August 30, 2009
No problems with these bearings. I have yet to see them go out earlier than normal 8x16x5mm bearings. Not sure what everyone is talking about these bearings wearing very quickly, as I have yet to see it happen on any of the 4 Mugens I have built so far.