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Replacement sprocket ST3

2412 Views 8 Replies 9 Participants Last post by  L2Bike
I have seen a number of posts advocating going to a 42 tooth sprocket on the rear. If I do this, do I need to change the chain as well? Pros and cons of this mod? Any recommendations on the best source for a replacement sprocket?chain?
Thanks, Jack.
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oldguy said:
I have seen a number of posts advocating going to a 42 tooth sprocket on the rear. If I do this, do I need to change the chain as well? Pros and cons of this mod? Any recommendations on the best source for a replacement sprocket?chain?
Thanks, Jack.
Many folks who complain about their stock gearing have an ST4S, which has a 15/38 stock sprocket ratio, if I'm not mistaken. Fortunately for you, the ST3 is geared with a 15/42 setup, which most people end up going to; or at least in that neighborhood of ratio. So, you're all set! :)
 
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