Dura-Ace FC7900 Crank Backward Compatible?

[Hawker]

Is there any reason why the DA 7900 crankset would not be compatible with DA 7800 series or Ultegra 10spd series shifter and derailleurs. I'm no expert here, just want to be sure there aren't issues with trim or pull ratios.

Thanks.

[KidWok]

The pull ratio was changed in 7900 FD, but the chainring spacing was the same as before. Should work.

Tai

[Hawker]

Thank you.

[Matthew]

I run a 7900 crank on a bike with 7800 shifters and derailleurs. Works great.

[Hawker]

Thanks Matthew!

[tv_vt]

I run that crank with Ultegra 6500 and 7700 Dura Ace 9 speed stuff and it's fine. Also use it with 11 speed 8000 stuff and it's fine with that too.