Haven't tried the ZEE, but know that to/for me it seems like for Shimano at least, an 11spd RD will work just fine with a 10spd shifter and cassette, you can't tell they're not the "right" combo, however, going the other way 10spd RD with 11spd cassette and shifter doesn't seem to play as nice, not by a long shot.
Jan. 17, 2022, 8:39 a.m. - Lynx .
Haven't tried the ZEE, but know that to/for me it seems like for Shimano at least, an 11spd RD will work just fine with a 10spd shifter and cassette, you can't tell they're not the "right" combo, however, going the other way 10spd RD with 11spd cassette and shifter doesn't seem to play as nice, not by a long shot.