Shimano Ultegra RD-R8000 11-Speed Rear Derailleur

• Shimano shadow RD construction
• Low profile rear derailleur design, less likely to be damaged in crash
• SS: compatible with 11-25 to 11-30 cassttes
• GS: compatible with 11-28 to 11-34 cassettes
• Weight: 200g (SS), 210g (GS)