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3 Comments

  1. The width is determined by the number of teeth on the cog. The width itself doesn’t inherently mean anything, but the number of teeth determines your gear ratio. 

  2. The circumference influences the gear ratio. larger sprocket in the rear makes it easier to pedal, but you will have a reduced max speed compared to a narrower sprocket.

  3. I’m unsure what you mean by wider? Toothcount is what is important, more teeth = lower gear = less speed.
    Count the teeth of your old one and replace with a new one with as many teeth, unless you want to change gearing.

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