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.
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.
FEATURE
・Fast and reliable shifting on rough terrain
・Adjustable chain stabilizer prevents chain slap
・SHIMANO SHADOW RD+
・Gravel-tuned clutch tension
・Switch stabilizer ON/OFF to match terrain: ON for gravel, OFF for smooth roads
・LED status indicator
・Battery indicator, pairing, adjust mode, etc.
・Top sprocket: Max. 11T/Min. 11T
・Low sprocket: Max. 36T/Min. 34T
・Total capacity: 40T