Which 6603 Derailleurs are right for me?

[chanc]

I think I narrowed it down to the 6603's. My cervelo 51cm has the FSA 50/39/30 130mm ck6020 triple crank. I am confused about which size front and rear derailleurs and cassette I should purchase to keep it 10 speed. I know I need the SL 6603 Shifter. Any help would be appreciated.

Thanks Chanc

 

[alfeng]

I think I narrowed it down to the 6603's. My cervelo 51cm has the FSA 50/39/30 130mm ck6020 triple crank. I am confused about which size front and rear derailleurs and cassette I should purchase to keep it 10 speed. I know I need the SL 6603 Shifter. Any help would be appreciated.

With most triple cranksets, you want to use both front & rear derailleurs which are designed for a triple ... so, the 6600 GS rear derailleur (which 'I' would refer to as the 6603) which has a longer pulley cage & the "6603" front derailleur with the appropriate size mounting band OR braze-on mount.

Of course, you could choose the DA or 105 equivalent derialleurs.