Medium Cage Rear Derailleur (11-speed)

The Shimano RD-6870-GS is the medium cage rear derailleur for the 6870 series. It supports a max front difference of 16T, a low sprocket minimum of 28T and a low sprocket maximum of 32T. The top sprocket maximum is 12T and the minimum is 11T. It has a total capacity of 37T and weighs only 11g more than the short cage derailleur - 268g.

It also features Shimano's Crash Protection Mode - this prevents shifting after a crash to make sure the rear derailleur is damaged any further. To restore shifting functionality have a look at our FAQ I had a small crash and my rear derailleur stopped working. What happened?


Details & specifications

Shimano model codeRD-6870-GS
Shimano model nameMedium cage rear derailleur
Weight268 g
Downloads Di2 Rear derailleur manual
Ultegra 6870 manual
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Shopping links

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