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Discussion Starter · #1 ·
So I'm all ready to change out the rings on my XT 770 cranks. I sit down with what I think are all the proper materials, and to my shock the middle and big rings are attached by Torx bolts.

Does anyone know what size I need for this?

Thanks.
 

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I hate that Shimano uses Torx chainring bolts. I swapped out the bolts on all my cranks to 5mm.....makes it easier to tighten on the trail if needed.
 

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Discussion Starter · #5 ·
JSumner13 said:
I hate that Shimano uses Torx chainring bolts. I swapped out the bolts on all my cranks to 5mm.....makes it easier to tighten on the trail if needed.
Very good point.
 
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