Shimano Sora RD-R3000-GS Rear Derailleur - 9 Speed, Medium Cage, Black 2017 Ships within United States Buy Online or Click & Collect Share Loading Facebook Like button... Shimano Sora RD-R3000-GS Rear Derailleur - 9 Speed, Medium Cage, Black 2017 Ships within United States Buy Online or Click & Collect Share Loading Facebook Like button...