Introducing the newest addition to our lineup: the 12-speed Shimano ULTEGRA R8150 rear derailleur. Engineered for maximum speed and precision, this rear derailleur now comes in a single cage length option, making it more accessible while delivering top-notch performance.

FEATURES:

  • Lightning-Fast Shifting: Experience our quickest rear shifting yet, clocking in at 58% faster than the RD-R9150.
  • Compact Design: Designed with convenience in mind, this compact unit includes an integrated wireless unit, charger, and switch for seamless operation.
  • LED Status Indicator: Stay informed with the built-in LED indicator, keeping you updated on battery status and shifting mode.
  • Versatile Compatibility: With a single cage length option, this derailleur is compatible with 28-34T low sprockets, offering a wider range of gear options.
  • Direct Mount Rear Derailleur: Featuring Shimano's innovative direct mount technology, installation and wheel removal are a breeze, perfect for a variety of contemporary frames including those with large-section chainstays and thru-axle dropouts.
  • E-TUBE Technology: Seamlessly connect your bike, accessories, and Shimano components with E-TUBE, maximizing your riding experience both on and off the bike. Customize settings, update firmware, and perform maintenance wirelessly with ease.
  • SHIMANO SHADOW RD: Experience smooth and silent performance even in aggressive riding conditions thanks to Shimano's SHADOW RD technology, designed to minimize chainstay interference and deliver unparalleled reliability.

Elevate your cycling experience with the new 12-speed Shimano ULTEGRA R8150 rear derailleur, where speed, precision, and versatility converge for an unparalleled ride.

 

TECHNOLOGIES

Direct Mount Rear Derailleur

Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular mountain bikes with thru-axle dropouts. Allows for flexible frame design No special tooling requirement (M10x1 Mount bolt, without e-clip) Easier to install rear wheel

E-TUBE

E-TUBE is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and SHIMANO.

E-TUBE PROJECT
CUSTOMIZABLE SETTINGS OFF THE BIKE
SHIMANO’s genuine application E-TUBE PROJECT Cyclist allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get the more detailed bike maintenance by connecting to your bike by wire with E-TUBE PROJECT Professional application.

SHIMANO SHADOW RD

The mechanism rear derailleur, SHIMANO SHADOW RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

 

SPECIFICATIONS

MODEL NO RD-R8150
SERIES ULTEGRA R8100 Series
Colour Series colour
Average weight 262g
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. 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
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

(IRDR8150D)

FEATURES:

  • Lightning-Fast Shifting: Experience our quickest rear shifting yet, clocking in at 58% faster than the RD-R9150.
  • Compact Design: Designed with convenience in mind, this compact unit includes an integrated wireless unit, charger, and switch for seamless operation.
  • LED Status Indicator: Stay informed with the built-in LED indicator, keeping you updated on battery status and shifting mode.
  • Versatile Compatibility: With a single cage length option, this derailleur is compatible with 28-34T low sprockets, offering a wider range of gear options.
  • Direct Mount Rear Derailleur: Featuring Shimano's innovative direct mount technology, installation and wheel removal are a breeze, perfect for a variety of contemporary frames including those with large-section chainstays and thru-axle dropouts.
  • E-TUBE Technology: Seamlessly connect your bike, accessories, and Shimano components with E-TUBE, maximizing your riding experience both on and off the bike. Customize settings, update firmware, and perform maintenance wirelessly with ease.
  • SHIMANO SHADOW RD: Experience smooth and silent performance even in aggressive riding conditions thanks to Shimano's SHADOW RD technology, designed to minimize chainstay interference and deliver unparalleled reliability.

Elevate your cycling experience with the new 12-speed Shimano ULTEGRA R8150 rear derailleur, where speed, precision, and versatility converge for an unparalleled ride.

 

TECHNOLOGIES

Direct Mount Rear Derailleur

Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular mountain bikes with thru-axle dropouts. Allows for flexible frame design No special tooling requirement (M10x1 Mount bolt, without e-clip) Easier to install rear wheel

E-TUBE

E-TUBE is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and SHIMANO.

E-TUBE PROJECT
CUSTOMIZABLE SETTINGS OFF THE BIKE
SHIMANO’s genuine application E-TUBE PROJECT Cyclist allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get the more detailed bike maintenance by connecting to your bike by wire with E-TUBE PROJECT Professional application.

SHIMANO SHADOW RD

The mechanism rear derailleur, SHIMANO SHADOW RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

MODEL NO RD-R8150
SERIES ULTEGRA R8100 Series
Colour Series colour
Average weight 262g
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. 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
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
SKU IRDR8150D
Brand Shimano

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