My front sprocket "wobbles": Difference between revisions

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	Sprockets are parts that wear slowly but constantly, and have to be changed periodically. Be happy that your 250 Ninja, like most Japanese bikes, has the ideal form of front sprocket mounting.		Sprockets are parts that wear slowly but constantly, and have to be changed periodically. Be happy that your 250 Ninja, like most Japanese bikes, has the ideal form of front sprocket mounting.

			'''A note on design:''' The cheaper sprockets are cut/stamped out of a flat piece of metal; they're the same thickness all over, like a rear sprocket. The better ones (OEM and AFAM, perhaps others which we're not sure about) have a thicker area in the center where the splines are (the "hub"). This makes them marginally less wobbly, and should reduce wear on the countershaft splines, since they have a larger contact area.