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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.
Shimano GRX Di2 2x12sp RD-RX825 Direct Mount Rear Derailleur
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.
IRDRX825A
€359.99
€323.99
Save 10%
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Rating
FREE SHIPPING IN ITALY FROM 129,99 EUROS*
100% SECURE CHECKOUT
N.1 in Italy in the Bike and E-Bike Shops
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
Compact design with integrated wireless unit, charging port, and switch
Fast and reliable shifting on rough terrain
Gravel-tuned clutch tension
LED status indicator
Top sprocket: Max. 11T/Min. 11T
Low sprocket: Max. 36T/Min. 34T
Total capacity: 40T
FEATURE
Adjustable chain stabilizer prevents chain slap
SHIMANO SHADOW RD+
Switch stabilizer ON/OFF to match terrain: ON for gravel, OFF for smooth roads
Battery indicator, pairing, adjust mode, etc.
PRODUCT SPECIFICATIONS
Model No: RD-RX825
Series: GRX
Rear speeds: 12
RD construction: SHIMANO SHADOW RD+: Yes
Mount: Direct attachment (conventional): Yes
Direct mount: Yes
Max. front difference: 17T
Total capacity: 40T
Low sprocket: Max.: 36T / Min.: 34T
Top sprocket: Max.: 11T / Min.: 11T
Fluoric coated link bushings: 4
Guide pulley bearing: Sealed bearing
Tension pulley bearing: Sealed bearing
Teeth: 11/13T
Sunken type pulley screw: Yes
B-axle: Hollow axle: Yes
B-axle 2: Hollow axle: Yes
Di2 connectivity wired: Di2 shifting: Yes
Di2 connectivity wireless: Di2 shifting: Yes
Bluetooth® LE custom (*1)|Adjust mode information: Yes
Bluetooth® LE custom (*1)|Di2 battery level: Yes
Bluetooth® LE custom (*1)|Gear position: Yes
Bluetooth® LE custom (*1)|SHIMANO E-BIKE SYSTEMS data items (*3): Yes
Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE: Yes
Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT: Yes
ANT private (*2)|Adjust mode information: Yes
ANT private (*2)|Di2 battery level: Yes
ANT private (*2)|Gear position: Yes
ANT private (*2)|SHIMANO E-BIKE SYSTEMS data items (*3): Yes
Firmware update by E-TUBE PROJECT: Yes
SD50 port (pcs): 0
SD300 port (pcs): 1
SD50 connector (pcs): 0
SD300 connector (pcs): 0
LED for system status: Yes
Charging cable: EW-EC300
Remarks: w/o Bracket spec. available
Color: Series color
IRDRX825A
Data sheet
- Code
- SH241024
- Gear Ratio
- 12
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