With a new arm actuating the parallelogram, the Centaur™ 2007 QS™ front derailleurs allow riders snappier and lighter shifting. They need to be interfaced with the left-hand Ergopower™ QS™ controls and are available in two versions: for standard cranksets.

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Specifications:

for double standard crankset -

capacity 15 – max. chainring 54 -

min. chainring 39-

antifriction insert

Weight 86gms