New sprockets

[GSeX]

Replacing the sprockets on my GSX250 Invader, and the front sprocket listed as being for my bike model is much thinner profile and moves sideways on the shaft about 5-10mm, is this something to worry about. Pics attached, uses circlip instead of nut like some bikes

[F5 Dave]

Hmm, hard to see from the pics but is the chain area of the teeth the same size? as in it should be say a 520 chain & both sprockets are for the same chain?

Circlip will work fine & is std on some smaller suzukis.

However: that bush that it usually rests up against has a o-ring behind it. You don't want the bush moving away or you may get an oil leak running done between teh bush and the shaft. In fact I haven't see a circlip used with that system before, but clearly it must work. I'd work out where the sprockets are different & make some washers for either or one side depending on the difference. Assuming of course the teeth are the same thickness for the chain as mentioned before.

[tjl888]

On my '04 GSX250 the sprocket also slides 5-10mm, it was like that when I got it and haven't had any trouble with it so far.
I have had the sprocket off and it doesn't have that strange bush thing on it that the sprocket on the right hand side of the photo you put up has.

[GSeX]

Yeah it's the same 520 pitch as the chain. Stuck the new sprocket on today and took it for a mean ride no problems, must just be how the GSX is designed