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.

FEATURES

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

PRODUCT SPECIFICATIONS

MODEL NO	RD-R8150
SERIES	ULTEGRA R8100 Series
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.	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

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