Shimano GRX RD-RX825 Di2 Rear Derailleur 12-Speed

Shimano GRX RD-RX825 Di2 Rear Derailleur - 12-Speed Long Cage With Clutch For 2x Black

Shimano's GRX RX825 Di2 12-speed rear derailleur is designed to deliver fast and reliable shifting for mixed-terrain riding, thanks to its integrated wireless connectivity unit and charging port. This innovative design ensures easy recharging and smooth performance on any ride.

Key Features:

• Integrated wireless unit, charging port, and switch for a compact and efficient design.
• Fast and reliable shifting, even on rough terrain.
• Adjustable chain stabilizer to prevent chain slap.
• Shimano Shadow RD+ technology enhances drivetrain quietness by utilizing a stabilizer to reduce chain slap and prevent chain drops.
• Gravel-tuned clutch tension with an ON/OFF switch to adapt to terrain:
  • ON for gravel.
  • OFF for smooth roads.
• LED status indicator for quick identification of battery life, pairing, and adjustment modes.

Compatibility:

• Top sprocket: Max. 11t / Min. 11t.
• Low sprocket: Max. 36t / Min. 34t.
• Total capacity: 40t.
• Compatible with 11-34t and 11-36t 12-speed cassettes.
• Supports Full or Semi-Synchronized shift modes for enhanced rider customization.

Additional Highlights:

• Integrated Shadow RD+ technology ensures precise shifting and reduces chain slap, even on rough terrain.
• Built-in ON/OFF switch simplifies wheel removal.

Specifications:

• Largest Cog: 36t.
• Rear Derailleur/Shifter Compatibility: Shimano Road Di2.
• Rear Derailleur Mount Type: 10x1 Standard / Shimano Rear Direct Mount.
• Drivetrain Speeds: 12.
• Chain Wrap Capacity (teeth): 40.
• Cage Length: Long.
• Color: Black.

This derailleur is the perfect choice for riders seeking smooth, reliable, and customizable shifting performance, whether tackling gravel roads or smooth pavement.