In Derailleur Hangers - Dropouts ... Fatbirds has found 158 Product(s)
The derailleur hanger or mech hanger is the part of the dropout that the rear derailleur attaches to.
Most non-steel framed bikes have a separate removable derailleur hanger, generally made from aluminium which is bolted to the dropout. These are intended as a cheap replaceable part so that in the event of an accident or mechanical problem that could damage the derailleur or frame, the derailleur hanger breaks or deforms instead. Sometimes a shear bolt which is designed as a weak point will also be used. There are dozens of different derailleur hangers available and one model is seldom interchangeable with another.
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