• The previous seatpost was a full carbon easton ec90. 6g lighter thant the thomson but it was made for classic round shape rails and the screw was three thread in with my oval rails tune. For 6g I chose security

    short summary:
    105 5700 levers and rear derailler
    105 1055 front derailler, front shifter and brake calipers
    105 5800 crankset, chainrings, pedals and chain
    105 5600 cassette

  • Amazing that you got it to this weight with all that. Bravo!
    Now with shorter valve extenders you can surely save a few grams.

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