Short Cage Rear Derailleur

DURA-ACE RD-9070-SS

Shimano's DURA-ACE RD-9070 rear derailleur is available in the short cage version only. Its top sprocket max is 14T, the min top sprocket size is 11T.

The low sprocket max is 28T and the min is 23T. It has a **max front difference **of 16T.

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When paired with 9070 / 6870 or newer components and the BT-DN110 battery, this derailleur supports synchronized shift.

Specifications

Model code: RD-9070-SS
Series: DURA-ACE (9070)
Weight: 217g
Speeds: 11
SD50 ports: 1
Max front difference: 16T
Total capacity: 33T
Low sprocket max: 28T
Low sprocket min: 23T
Top sprocket min: 11T
Top sprocket max: 14T
Pulley teeth: 11
Mount: Conventional mount
RD type: Non-shadow RD
Clutch: No

Related components

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ST-9070

Dual Control Lever

FD-9070-F

Front Derailleur

SM-EW90-A, SM-EW90-B

Below-the-stem Junction A

BT-DN110

Internal Battery

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Manuals & other documents

Di2 Rear Derailleur User Manual0.36mb
Download
DURA-ACE 9070 Dealer Manual2.34mb
Download

Firmware updates

Below is an overview of all known firmware updates for this component. The changelog texts are Shimano's, and quite often they're a bit cryptic - sorry!

3.0.1 June 16, 2017
Bug fixing
2.6.3 March 25, 2016
Bug fixing
2.6.2 April 10, 2015
Fixed SM-BTR2 bug
2.6.0 October 15, 2013
Enhancement of energy-saving.
2.5.0 September 24, 2013
Enhancement of shifting performance and anti-vibration function
2.1.0 March 26, 2013
Improved stablility of unit communicationEnhancement of energy-saving