10 speed on 6800

[johnniecakes]

If I want to run 10 speed on a 6800 rear hub how wide of a spacer do I need on the inside of the cassette?

[Look585]

1.85mm is the width of the spacer that comes with the hub for this purpose.

[shovelhd]

Then you need to add the standard 1mm 10 speed spacer.

[johnniecakes]

So I have to put on 2 spacers for a total of 2.85mm to run 10 speed on 6800?

[marciero]

So I have to put on 2 spacers for a total of 2.85mm to run 10 speed on 6800?

I saw a chart somewhere that seemed to indicate this, yet only a 1.8 worth for a 9sp.

[oldpotatoe]

So I have to put on 2 spacers for a total of 2.85mm to run 10 speed on 6800?

That is correct for Shimano 10s cogsets. Only the 1.85 with 8 and 9s...and the other S maker of 10s.