Super Record 13 front derailleur, with a lightweight design, a new carbon fork, and a wider chain pick-up range with a capacity that now goes from 29 to 55 teeth.Features:- The new engineering guarantees smooth shifting in both directions even when the chain is subjected to stress and strong pulls.- Battery location, in the front, ensures greater clearance for the rear tire and offers a range of up to 750 km.- The battery can be charged directly on the bicycle or easily removed for recharging, using a standard USB port and its specific charging cable.- A 100% charge is completed in one hour (although it reaches 90% in just 45 minutes) and the system status can be checked via a single color LED.- 2 mounting holes for brazed-on mounting to accommodate a wide range of chainring options.