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Discussion Starter · #1 ·
Looking to upgrade a crank set on my sons bike and he's currently got a Shimano Octalink (lower end setup) and I wanted to upgrade it a bit. Question is the 8 speed Octalinks are tougher to find at a deal but the 9 speed are a dime a dozen and a great price. The only difference I can see is the larger ring has 42 teeth on the 8 speed and the 9 speed has 44. Will these work on an 8 Speed. I had one dealer tell me they do it all the time but I don't want to create any shifting issues.

Thanks
 
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