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Shimano FC-M8000 with 8 bolts on back?

PB Forum :: Mechanics' Lounge
Shimano FC-M8000 with 8 bolts on back?
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flag WozzaD
Posted: Mar 20, 2022 at 3:18 Quote
Hi, I’m panicking that I’ve bought the wrong crankset. I bought the FC-M8000 shimano xt. I opened the box and on the back of the crankset there are 8 holes for bolts at 2 different levels. (2 levels of 4 bolt holes) At first this had me thinking that I had been sent the wrong item and this was for a 2 ring setup. However looking around online all the pictures I can find online show the 8 bolt holes. Is my crankset wrong, if not why are there 2 sets of holes??

Thanks guys..
flag JonnyTheWeasel
Posted: Mar 20, 2022 at 4:25 Quote
You can run 2 rings on there if you wanted to.
flag WozzaD
Posted: Mar 20, 2022 at 11:07 Quote
So the FC-M8000 is universal for 1 or 2 ring setups?
flag muddytreker
Posted: Mar 20, 2022 at 12:14 Quote
Its unlikely theres extra holes for storing spare chainring bolts : )
flag ka81
Posted: Mar 21, 2022 at 10:37 Quote
It's widely known that other 4 bolt's holes are for another two water-bottle cages. Yes, those are not the same diameter like in-frame's, those are for special cages for 1.5 and if possible 2L bottles..
flag Cpembo6
Posted: Mar 21, 2022 at 23:56 Quote
What code is written on the crank arm? It will have a number or letter after the M8000 which will tell you the exact version you have.

see here
bike.shimano.com/en-US/product/component/deorext-m8000.html
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