Shimano Ultegra R8150 Di2 12 Spd Rear Derailleur

Shimano Ultegra R8150 Di2 12 Spd Rear Derailleur Now simplified with a single derailleur cage length, the new 12-speed Shimano ULTEGRA R8150 rear derailleur packs Shimano's fastest, most precise shifting into a more approachable option. With their 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. FEATURES: Shimano's 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 SPECIFICATIONS: MODEL NO RD-R8150 SERIES ULTEGRA R8100 Series Average weight 262 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.