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  • Using more metal than its top-shelf Dura-Ace kin, the Shimano Ultegra RD-6800-GS 11-Speed Rear Derailleur enjoys enhanced durability for lasting performance
  • Wide pivot design increases rigidity to resist unwanted movement or twisting when shifting, improving shifting precision and speed
  • Compatible with up to a 32T rear cassette sprocket, letting you use a cassette with a wide gear range for easy-spinning comfort, even on steep hills


  • Save 10%! This item qualifies for our drivetrain bike part discount. See Details

View all Shimano Rear Derailleurs

REI membership


Best Use Road Cycling
Derailleur Type Rear
Cage Length Medium Cage
Max Rear Cog Size 32
Speeds 11-speed
Weight 207 grams
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If I replace a 6700 10 speed with 6800 11 speed, do I need the new shifter and do I need the new front derailleur?

Asked by: theraddler
If you move from 10 speed to 11 speed you will need to purchase a new rear shifter that is compatible with ann 11 speed setup. If you stay with the same number of chainrings in the front you should not have to change the shifter or the derailleur there.
Answered by: REIservice
Date published: 2017-05-24
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