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PostPosted: Wed Jan 27, 2016 8:04 am 
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Joined: Mon May 07, 2007 1:06 pm
Posts: 252
Location: UK
Hi All,

Struggling to find a 40 + 28 tooth replacement chain rings for this chainset below. 10 speed.

Any idea's, Shimano or anyone brand as long as they shift up and down OK.
Image

Also toying with the idea of just swopping it for a 11 speed double, I think the 10 speed chain would be OK on the rings but would the throw of the front mech be OK and also would the chain line be OK, also are the axle's the same diameter?
XTR Race M9000 11 Speed Double Chainset

Cheers.

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PostPosted: Wed Jan 27, 2016 9:13 am 
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Joined: Wed Jan 18, 2012 4:23 pm
Posts: 892
Location: Midlands, United Kingdom
I'd stick with Shimano rings for the M980, yes you can use an 11 speed crankset no issue.

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Posted: Wed Jan 27, 2016 9:13 am 


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PostPosted: Wed Jan 27, 2016 10:27 am 
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Joined: Wed Sep 16, 2009 10:25 am
Posts: 256
Location: Australia
kingkongsfinger wrote:
Also toying with the idea of just swopping it for a 11 speed double, I think the 10 speed chain would be OK on the rings but would the throw of the front mech be OK and also would the chain line be OK, also are the axle's the same diameter?


Yep you can fit the M9020 cranks- exact same axle.
In regards to the front mech- as long as you get the 'Trail' M9020 crank with 168mm q-factor (which matches the M980 double crank you have) it should be okay I think.


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PostPosted: Wed Jan 27, 2016 3:26 pm 
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Joined: Sat Jan 13, 2007 10:24 pm
Posts: 752
Location: Fort St John
I just replaced my 980 trail chainrings and had no issue finding replacements. I think it was eBay. They were dirt cheap too if I recall.

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