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20T ring on XT M770 crankset clearance?

804 views 8 replies 5 participants last post by  Shawn in da Canyon 
#1 ·
I would like to put a 20T ring on my XT M770 3x9 crankset with a 10 speed chain. Anyone out there that have done this? I'm afraid that the chain will rub on the posts that the ring attaches to, because the chain comes pretty close to the posts with the stock 22T ring.
Thanks,
Shawn
 
#4 ·
No shifting problems? Or rubbing problems in the front derailer?

Do you climb some extremely steep terrain? Why drop down to a 20 tooth?

What size is your cassette?
Yeah, around here everything is either up or down. Cassette is 11-34, 9 speed. I really don't want to increase my weight by putting on a 36T and losing my 11T on my cassette.
 
#8 ·
The 20t front and 34t rear combo works great, for the steepest climbs. So what if you can hike it on foot faster? The fact I don't have to put a foot down and keep pedaling, makes it all worth it!
 
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