Real-time store inventory. All prices include GST.

Shimano Ultegra Di2 (RD-R8150) 12 Speed 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.

This product is currently out of stock and unavailable.

Product Details

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
Adjust mode, etc.
Wider range capacity
Max. low sprocket: 34T


Color: Series color
Average weight: 262
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: 39T
Low sprocket|Max.: 34T
Low sprocket|Min.: 30T
Top sprocket|Max.; 14T
Top sprocket|Min.: 11T
Fluoric coated link bushings; 4
Pulley|G pulley bearing: ✔
Pulley|T pulley bearing: ✔
Pulley|Teeth: 11
Pulley|Sunken type pulley bolt: ✔
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: ✔
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT: ✔
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): ✔
Firmware update by E-TUBE PROJECT: ✔
SD50 port (pcs): 0
SD300 port (pcs): 1
SD50 connector (pcs): 0
SD300 connector (pcs): 0
LED for system status: ✔
Charging port (pcs): 1
Charging cable: EW-EC300 (excluded)


SKU: RD-R8150 Category:
  • No products in the cart.