11 Speed Rear Deraileur on a 10 speed

[jglantzx2]

11 speed deraileur works fine on 10 speed set up.
You need to change the 11 sp pulleys to 10 sp pulleys.
Also, I swaped out the titanium parts from a record 10 sp rear deraileur to a record 11 sp.
Makes it lighter and more or less equivalent to a super record rd