Shimano RD-M5100 Rear Derailleur Deore Shadow+ 11-Speed long 51T Maximum 1x11 Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Shimano RD-M5100 Rear Derailleur Deore Shadow+ 11-Speed long 51T Maximum 1x11 Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...