Medium Cage Rear Derailleur

RD-6870-GS - Medium Cage Rear Derailleur image

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 number:RD-6870-GS
Weight:268 g
E-Tube ports:1
E-Tube Port type:SD50
Type:Rear Derailleur
Component series:Ultegra 6870 (Road)
Downloads:Ultegra 6870 Dealer Manual
Di2 Rear Derailleur User Manual

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