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MTB Crank on Shimano GRX Build?

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MTB Crank on Shimano GRX Build?

Old 06-30-20, 11:25 AM
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996 
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MTB Crank on Shimano GRX Build?

Hi Guys -

Wanted to run this by the forum to see if it possible given the differences in MTB cranks and the GRX 1x cranks.

Want some lower gearing up front in a 1x10 setup. I know that the GRX 400 rear mech can take up to a 42T cassette - I just want to run lower gearing up front. Would it be possible to fit an MTB chainring like a 30T or 32T with the GRX cranks?

Or am I better off just going with an MTB 30T or 32T Shimano crankset up front... any input would be greatly appreciated.

Thanks.
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Old 06-30-20, 12:02 PM
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DorkDisk
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Why not something like an Easton crank with 30t chainring? That way you can keep a low Q factor.
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Old 06-30-20, 12:29 PM
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wsteve464
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Buy a GRX 2x crankset and take the big chainring off and replace with a bash guard. Then you can go 2x if you change your mind down the road.
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Old 06-30-20, 12:39 PM
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Originally Posted by DorkDisk View Post
Why not something like an Easton crank with 30t chainring? That way you can keep a low Q factor.
Will an Easton Crank be compatible with a Shimano BSA BB?

I know that Easton makes a BSA BB, but would like to stick with Shimano - reliability is incredible.

Thanks for the suggestion
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Old 06-30-20, 12:41 PM
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Originally Posted by wsteve464 View Post
Buy a GRX 2x crankset and take the big chainring off and replace with a bash guard. Then you can go 2x if you change your mind down the road.
Would prefer to just keep it a clean 1x crank - but will explore this. thanks!
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