The Chorus QS front derailleurs in both the standard and compact crankset versions have a longer front link to provide snappier and lighter shifting in combination with Ergopower QS controls.
The cage is in aluminium with a surface treatment which exalts lightness and stiffness, with even more responsive shifting.
For CT crankset Chainring capacity 16: Max chainring 50, Min. chainring 34.
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