描述
SHIMANO’s GRX Di2 12-speed rear derailleur features a built-in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed-terrain riding and easy recharging. Integrated SHADOW RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to built-in ON/OFF switch, wheel removal is easy too. The RD-RX825 is compatible with 11-34T and 11-36T 12-speed cassettes and supports Full or Semi-Synchronized shift modes, enhancing rider customization.
BENEFIT
Fast and reliable shifting on rough terrain
FEATURE
Adjustable chain stabilizer prevents chain slap
FEATURE
SHIMANO SHADOW RD+
BENEFIT
Gravel-tuned clutch tension
FEATURE
Switch stabilizer ON/OFF to match terrain: ON for gravel, OFF for smooth roads
BENEFIT
LED status indicator
FEATURE
Battery indicator, pairing, adjust mode, etc.
BENEFIT
Top sprocket: Max. 11T/Min. 11T
BENEFIT
Low sprocket: Max. 36T/Min. 34T
BENEFIT
Total capacity: 40T
PRODUCT SPECIFICATION
Model No: RD-RX825
Series: GRX
Rear speeds: 12
RD construction: SHIMANO SHADOW RD+
Mount: Direct attachment (conventional)/Direct mount
Max. front difference: 17T
Total capacity: 40T
Low sprocket: Max. 36T Min.34T
Top sprocket: Max.11T Min.11T
Fluoric coated link bushings: 4
Pulley
Guide pulley bearing: Sealed bearing
Tension pulley bearing: Sealed bearing
Teeth: 11/13T
Sunken type pulley screw
B-axle: Hollow axle
B-axle 2: Hollow axle
Di2 connectivity wired: Di2 shifting
Di2 connectivity wireless: Di2 shifting; Bluetooth® LE custom (*1)|Adjust mode information; Bluetooth® LE custom (*1)|Di2 battery level; Bluetooth® LE custom (*1)|Gear position; Bluetooth® LE custom (*1)|SHIMANO E-BIKE SYSTEMS data items (*3); Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE; Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT; ANT private (*2)|Adjust mode information; ANT private (*2)|Di2 battery level
; NT private (*2)|Gear position; ANT private (*2)|SHIMANO E-BIKE SYSTEMS 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 cable: EW-EC300
Remarks:
w/o Bracket spec. available
Color: Series color
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