Shimano Ultegra R8000 2/11-speed rear derailleur

Shimano Ultegra R8000 rear derailleur

RD-R8000
Rear derailleur

The RD-R8000 rear derailleur creates a reduction in shifting effort at the lever, at the same time remaining sure, quick and precise. The groupset offers two specific rear derailleurs: one for cassettes 11-25 and 11-30 and one for cassettes 11-28 and 11-34, securing a smooth ride in even the highest and steepest mountain areas. Due to the integrated Shadow RD Technology with its race-proven, low profile design, the derailleur is more compact and fits closer to the frame, ensuring less damage in a crash.

BikeRadar's Shimano Ultegra R8000 first look Review

• Recommended chain: HG-EV und HG-X 11-fach
  
• Total Capacity: SS: 35T / GS: 39T
  
• Max. Difference (front) Chainrings: 16 T
  
• Max. largest cog: SS: 30T / GS: 34T
  
• Min. largest cog: SS: 25T / GS: 28T
  
• Max. smallest cog: SS: 14T / GS: 12T
  
• Min. smallest cog: 11T

Shimano Tech Manual