Front derailleur for a bicycle

A front derailleur for a bicycle, which switches a drive chain to a desired one of a plurality of sprockets fixed to a crank supported to a cylindrical bottom bracket of the bicycle and changes the bicycle speed, said front derailleur comprising a fixing member, two linkage members, and a movable member having a chain guide, said fixing member having a plate like connecting portion being fixed to said bottom bracket and an extension extending upwardly from said connecting portion, said extension having at its upper end a pivot portion for pivotally supporting therewith said two linkage members, said pivot portion extending in the axial direction of said bottom bracket and carrying a pair of parallel horizontal pins extending perpendicular to the axial direction of said bottom bracket, each of said linkage members being pivoted at its one lengthwise end to said pivot portion of said fixing member by one of said pins and extending at the other end upwardly with respect to said fixing member, said other end extending upwardly from each of said linkage members to pivotably support said movable member so that said chain guide at said movable member is positioned above said fixing member.