What are Shimano's SS and GS rear derailleurs? | cyclabo
Shimano 105 Rd-5701-Ss Short Cage Rear Derailleur — Movatik
Used Shimano 105 SS Rear Derailleur RD-5800 Short Cage 11 Speed | eBay
Shimano 105 SS 11-Speed Rear Derailleur
Shimano 105 R7000 Ultegra R8000 Rear Derailleur 11 Speed For Road Bike 11s Bicycle Ss Short Cage Gs Medium Cage Bike Accessories - Bicycle Derailleur - AliExpress