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

Features:

• Integrated D-FLY connectivity and charging port
• Fast and reliable shifting over rough terrain
• Adjustable chain stabilizer prevents chain slap and smooth shifting when hitting pavement sections
• Gravel-tuned clutch adds just the right amount of tension for chain management
• LED status indicator calls out battery life with a quick glance
• Compatible with 11-34 and 11-36T cassettes

Specifications:

• Speed: 12 Speed
• Shifter Compatibility: Shimano Di2
• Shift Mechanism: Electronic (Wireless/Wired)
• Max. Tooth: 36T
• Min. Tooth: 11T
• Chain Wrap Capacity: 40T
• Cage Material: Aluminum
• Chain Retention: Shadow RD+
• Color: Black
• Weight: 310g