Now simplified with a single derailleur cage length, the new 12-speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option.
With our fastest, most accurate shifting, the new 12-speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low sprockets.
•Our fastest ever rear shifting, 58% faster than RD-R9150
•Compact design includes an integrated wireless unit, charger, and switch
•LED status indicator
Battery indicator
Pairing
Adjust mode, etc.
•Wider range capacity
Max. low sprocket: 34T
Average weight - 262
Rear speeds - 12
Top-normal spring type|SHIMANO SHADOW RD - ✔
Mount|Direct attachment (conventional) - ✔
Mount|Direct mount - ✔
Max. front difference - 16T
Total capacity - 39T
Low sprocket|Max. - 34T
Low sprocket|Min. - 30T
Top sprocket|Max. - 11T
Top sprocket|Min. - 11T
Di2 connectivity wired|Di2 shifting - ✔
Di2 connectivity wireless|Di2 shifting - ✔
Firmware update by E-TUBE PROJECT - ✔
SD300 port (pcs) - 1
LED for system status - ✔
Charging port (pcs) - 1
Charging cable - EW-EC300
