Shimano RD-RX825 Rear Derailleur GRX 12-Speed 36T Max 2×12 Di2

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-Synchronised shift modes, enhancing rider customisation.

FEATURES

• Compact design with integrated wireless unit
• Fast and reliable shifting on rough terrain
• Adjustable chain stabiliser prevents chain slap
• Shimano Shadow RD+
• Gravel-tuned clutch tension

PRODUCT SPECIFICATIONS

Model No: RD-RX825
Series: Shimano GRX 2×12-speed Di2
Colour: Series Colour
Rear speeds: 12
Top-normal spring type|Shimano Shadow RD+: Yes
Mount|Direct attachment (conventional): Yes
Mount|Direct mount: Yes
Max. front difference: 17T
Total capacity: 40T
Low sprocket|Max.: 36T
Low sprocket|Min.: 34T
Top sprocket|Max.: 11T
Top sprocket|Min.: 11T
Fluoric coated link bushings: 4
Pulley|Guide pulley bearing: Sealed bearing
Pulley|Tension pulley bearing: Sealed bearing
Pulley|Teeth: 11/13T
Pulley|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
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Adjust mode information: Yes
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Di2 battery level: Yes
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Gear position: Yes
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Shimano Steps data items (*3): Yes
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-Tube Ride: Yes
Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-Tube Project: Yes
Di2 connectivity wireless|ANT private (*2)|Adjust mode information: Yes
Di2 connectivity wireless|ANT private (*2)|Di2 battery level: Yes
Di2 connectivity wireless|ANT private (*2)|Gear position: Yes
Di2 connectivity wireless|ANT private (*2)|Shimano Steps 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

ABOUT SHIMANO

In response to surging demand for global environmental preservation, bicycles now attract attention as the most eco-friendly means of transport. Shimano are dedicated to supply high-quality and high-performance components for different types of bicycles made in various countries and regions of the world, ranging from bicycles for the world’s top racers to daily users.

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