Shimano Ultegra Di2 R8150 12 Spd Rear Derailleur

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

• MODEL NO RD-R8150
• SERIES ULTEGRA R8100 Series
• Color Series color
• Average weight 262
• Remarks w/o Bracket spec. available
• Firmware update by E-TUBE PROJECT ✔
• Total capacity 39T
• Charging port (pcs) 1
• B-axle_Hollow axle ✔
• B-axle 2_Hollow axle ✔
• Mount_Direct mount compatible ✔
• Fluoric coated link bushings 4
• Low sprocket_Max. 34T
• Low sprocket_Min. 28T
• Max. front difference 16T
• Pulley_G pulley bearing ✔
• Pulley_Sunken type pulley bolt ✔
• Pulley_Teeth 11
• Pulley_T pulley bearing ✔
• Top-normal spring type_SHIMANO SHADOW RD ✔
• Top sprocket_Max. 14T
• Top sprocket_Min. 11T
• Rear speeds 12
• Di2 connectivity wired_Di2 shifting ✔
• Di2 connectivity wireless_ANT private (*2)_Adjust mode information ✔
• Di2 connectivity wireless_ANT private (*2)_Di2 battery level ✔
• Di2 connectivity wireless_ANT private (*2)_Gear position ✔
• Di2 connectivity wireless_ANT private (*2)_SHIMANO STEPS data items (*3) ✔
• Di2 connectivity wireless_Bluetooth® LE custom (*1)_Adjust mode information ✔
• Di2 connectivity wireless_Bluetooth® LE custom (*1)_Compatible with E-TUBE PROJECT ✔
• Di2 connectivity wireless_Bluetooth® LE custom (*1)_Compatible with E-TUBE RIDE ✔
• 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_Di2 shifting ✔
• LED for system status ✔
• SD300 connector (pcs) 0
• SD300 port (pcs) 1
• SD50 connector (pcs) 0
• SD50 port (pcs) 0