Shadow Rear Derailleur (12 speed)

RD-R9250 - Shadow Rear Derailleur (12 speed) image

This DURA-ACE Rear Derailleur is likely to be announced by Shimano in September 2021. It'll be a 12 speed system, semi-wireless and use a new battery, the BT-DN300.

This derailleur features a charge port, LED, button and an EW-SD300 type port used to connect the derailleur to the battery. Both the rear derailleur and the front derailleur connect to the battery using a wire. The shift levers send their shift commands to the rear derailleur wirelessly.

The low sprocket maximum is 34T and I expect a lot of bikes to be built up with 11-34T cassettes.

These 12-speed derailleurs use the same charger as the new Di2 power meters, and perhaps even better, the port cover can be replaced when broken.

Details & Specifications

Shimano model number:RD-R9250
Weight:215 g
E-Tube ports:1
E-Tube Port type:SD300
Type:Rear Derailleur
Component series:DURA-ACE R9200 (Road)
Downloads:RD-R9250 / RD-R8150 User Manual

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