Shimano GRX RD-RX825 12-Speed Di2 Rear Derailleur

Why We Like The Shimano GRX RD-RX825 12-Speed Di2 Rear Derailleur

For fast, reliable shifting during our mixed-terrain riding adventures, Shimano brings us the new GRX RD-RX825 12-Speed Di2 Rear Derailleur, complete with a built-in wireless connectivity unit and charging port for easy operation and recharging. SHIMANO SHADOW RD+ chain stabilization helps prevent chain slap to allow us to continue to shift accurately as we ride over rough terrain, while the switch stabilizer features an ON/OFF switch to match the terrain and ease wheel removal. Compatible with 11-34t and 11-36t 12-speed cassettes, this wireless rear derailleur is ready to be added to our dream gravel setup.

Details

• A 12-speed Di2 rear derailleur optimized for mixed-terrain riding
• Built with a compact design with an integrated wireless unit, charging port, and switch
• Shimano Shadow RD+ minimizes distraction for a quieter drivetrain
• Features a switch stabilizer with an ON/OFF switch to match the type of terrain
• An LED status indicator lets us know when to charge our system
• Chain slap is prevented with an adjustable chain stabilizer
• Top sprocket maximum and minimum of 11t
• Low sprocket maximum of 36t with a minimum of 34t
• Item #SHIU1NC

Tech Specs

Capacity

40t

Cassette Range

11-36t

Gearing

12-speed

Compatibility

11-34t and 11-36t 12-speed cassettes

Claimed Weight

310g

Activity

gravel

Manufacturer Warranty

2 years