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Shimano xtr 986 or xt 786 for 2x10 FD?

2K views 2 replies 3 participants last post by  digifun 
#1 ·
I've seen threads on interference and having to file portions of the FD for 2x10. Is one FD recommended over the other. Bike will have xtr 26:38 cranks. It is 2011 dw sultan.

Thanks
 
#2 ·
I have XTR M980 cranks with the 986 FD on '12 Spot. I replaced the 26t with a 24t because I need the extra grunt on some climbs and the FD is spec'd for a 14t spread. In order to get good shifting I had to file quite a bit. Shimano's literature says to get the outside of the cage 1-3mm above the teeth of the big ring. At 3mm shifting was unreliable. I removed the FD and kept filing until I was at 1mm. This is now the best shifting bike I've ever had. Totally worth the effort.
 
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