Originally Posted by
jimc101
Yes, they are all 9 speed components, current 105 (5700) is 10 speed, so non of the above will be compatible (although the FD should work on 9 or 10 speed setups)
RD is compatible with current 105 too. And brake levers are brake levers, there's nothing special about brake levers. So only the shift levers and the cassette are 9-speed specific.