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I saw this crankset online and it is called the Sram SX Eagle but it says: Compatible with 11/12 speeds. Why does it say this and can I run it with a 1x9 drivetrain?
 

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Murica Man
Do it for Dale (#3)
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I saw this crankset online and it is called the Sram SX Eagle but it says: Compatible with 11/12 speeds. Why does it say this and can I run it with a 1x9 drivetrain?
it's talking about the chainring. you can take it off and put a 9 spd chainring on there from amazon or something
 

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Murica Man
Do it for Dale (#3)
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this might help:
i think it might be something to do with the fact that a 12 spd chain is a lot narrower than a 9 spd one, which leads to compatibility issues, but i am not really sure
 

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Just a guess, but I think it would probably work fine. My thought is the reason why it's specifies is because it would have to have a wide / narrow chainring that accommodates the 11/12 speed chain. Putting a wider chain, the 9-speed, in the system would negate some of the security of the chainring teeth. If that's the case, I wouldn't think it would be a big problem.
 

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BOOM goes the dynamite!
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The other question you need to ask yourself is what bottom bracket you're using and if it's compatible with that crankset. Otherwise, you'll end up buying that, too.
 

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You will be fine, you probably don’t even need to change the chain ring. But if you do change the chain ring try to grab one that is narrow-wide.
 
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