Short Cage Rear Derailleur

Short Cage Rear Derailleur

Ultegra RD-6870-SS

The Shimano RD-6870-SS is their short cage rear derailleur for the 6870 series.

It supports a max front difference of 16T, a low sprocket minimum of 23T, and a **low sprocket maximum **of 28T. The top sprocket maximum is 14T and the minimum is 11T. It has a total capacity of 33T.

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