Shimano Di2 R9250 RD Rear Derailleur DURA-ACE 12Speed Road Bicycle Part SHADOW Rear Derailleur Support 34T Cassette 12S Original MODEL NO RD-R9250 SERIES DURA-ACE R9200 Series Color Series color Average weight 215 Remarks w/o Bracket spec. available Rear speeds 12 Top-normal spring type|SHIMANO SHADOW RD ✔ Mount|Direct attachment (conventional) ✔ Mount|Direct mount ✔ Max. front difference 16T Total capacity 37T Low sprocket|Max. 34T Low sprocket|Min. 30T Top sprocket|Max. 11T Top sprocket|Min. 11T Fluoric coated link bushings 4 Pulley|Guide pulley bearing ✔ Pulley|Tension pulley bearing ✔ Pulley|Teeth 11 Pulley|Sunken type pulley screw ✔ B-axle|Hollow axle ✔ B-axle 2|Hollow axle ✔ Di2 connectivity wired|Di2 shifting ✔ Di2 connectivity wireless|Di2 shifting ✔ Di2 connectivity wireless|Bluetooth® LE custom (*1)|Adjust mode information ✔ Di2 connectivity wireless|Bluetooth® LE custom (*1)|Di2 battery level ✔ Di2 connectivity wireless|Bluetooth® LE custom (*1)|Gear position ✔ Di2 connectivity wireless|Bluetooth® LE custom (*1)|SHIMANO STEPS data items (*3) ✔ Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE ✔

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