Help with BB selection : DEORE XT Crankset FC-T8000

rileyrg · 2023-04-28T08:46:42+01:00

Hi Can anyone clarify for me the difference between BB-MT801 abd BB-MT800 ? Id like to buy this crankset https://www.bike24.de/p1174490.html?sku=623473&gclid=Cj0KCQjw3a2iBhCFARIsAD4jQB0Io2W0I9QG8GTad_CATzZjbVLY10B9wgo3VHZiwpX-Lk_--18hXAQaAsW9EALw_wcB And they say the bb-mt800 BB is the one , but they themselves stock the bb-mt801 which seems identical. What obvious spec have I missed?

This topic has 4 replies, 2 voices, and was last updated 3 years, 1 month ago by Creakingcrank.

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April 28, 2023 at 8:46 am #32540

rileyrg

Hi

Can anyone clarify for me the difference between

BB-MT801 abd BB-MT800 ?

Id like to buy this crankset

https://www.bike24.de/p1174490.html?sku=623473&gclid=Cj0KCQjw3a2iBhCFARIsAD4jQB0Io2W0I9QG8GTad_CATzZjbVLY10B9wgo3VHZiwpX-Lk_–18hXAQaAsW9EALw_wcB

And they say the bb-mt800 BB is the one , but they themselves stock the bb-mt801 which seems identical.

What obvious spec have I missed?
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April 28, 2023 at 11:19 am #1012939
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Creakingcrank

I think there’s a very good

I think there’s a very good chance you will get away with the Sugino crank. I’ve certainly done exactly that on a bike before and (once I’d found the right front mech for the Shimano shifter) it worked fine.

April 28, 2023 at 11:06 am #1012937
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rileyrg

And the price looks right on
And the price looks right on this too.. FC-T521 plus octalink bb

April 28, 2023 at 10:50 am #1012935
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rileyrg

Hi , I didn’t get the tiagra

Hi , I didn’t get the tiagra crank. I’m not sure it can have a small enough inner ring for loaded touring. I’m sticking with my sugino…for now to see if it works… The one I’d likely replace it with is linked above, the FC-T8000. For the ridiculous low price of the tiagra FD, I might as well try. I won’t pretend I can fully follow the compatibility maze. If the sugino doesn’t play well , I’ll come back here for more hand holding. But the further I look into it , the more I’m certain that I want that frame to stay part of my life. Hopefully the ten speed tiagra make over will reignite it. I hope I haven’t misunderstood re the crank.. if you know the 9sp sugino crank won’t work please wave a flag. The diversity of opinion on these things is… Confusing ?

April 28, 2023 at 10:39 am #1012933
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Creakingcrank

The 801 model should be fine

The 801 model should be fine with this crank. The increase in the least significant digit probably indicates that Shimano made some kind of small change to the design while in production and this is a newer version.

BUT if this is for the bike we talked about before, you might hit compatibility problems with the Tiagra road triple front mech. MTB cranksets put the chainrings further from the centreline (to make room for the huge tyres) and sometimes road front mechs can’t reach out far enough. The existing Sugino chainset likely to be ok, or fixable with a shorter BB axle. Or look at a Shimano Road triple: Tiagra from current range, 105 triples still seem to avaialble at some UK retailers.
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