Derailleur Hanger 65, Specialized Rockhopper, Hardrock, S-works, 9895-4020, 4021

Derailleur Hanger 65, Specialized Stumpjumper, Demo, Epic, Fatboy, Hardrock, Enduro, Fuse, Jet and more. Specialized: Rockhopper M4 26: 2011-15. Specialized: Rockhopper M4 29: 2011-15. Specialized: Rockhopper M4SL 26: 2011.

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