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Discussion Starter · #1 ·
What is the difference in using these two setups??

12T front and a 40T rear VS. 13T front and a 41T rear?

x-chain or o-ring chain?


Im looking for low end grunt, my bike never sees WOT for very long.....
 

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12/40 will give more torque than 13/41 if you make some simple math you´ll get it.
see one more tooth affects more in a 13 to 12 than only one tooth in a 40 to 41.
 
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