• For the front derailleur you'd need either a hydro Shimano shifter or the hacked guts of any eTube front shifter. SW-600 climbers shifters can only operate the rear mech.

  • Hmm thought as much, have seen mentions of 'just using it on the left hand side' but no rel evidence of it being done.

    If I do end up going the DI2 route, then hacking the guts of r671 to shifters seems the best bet as they come for front and rear

  • Cosmetically poor 6770 shifters seem to go pretty cheaply, and if you're only using the Di2 electronics box in the shifters you don't need to hack hydro shifters - any will do.

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