By: Andrew YZ 490J Doesn't fit. To Wide. Also bought for YZ125J that one fit s perfectly. Will try the one I bought for 490J on my 250J but at suspension shop at moment.
The one for 125 seems better quality
Quality bearing AAA+
By: Bill Used this bearing on a 2006 Husqvarna Wr250 chain guide roller, works and fitd perfectly.