Shimano GRX Di2 RD-RX817 1x11-Speed Rear Derailleur: Unparalleled Control for Gravel Riding

The Shimano GRX Di2 RD-RX817 11-Speed Rear Derailleur brings the digital precision of SHIMANO electronic shifting to the gravel roads. Featuring an integrated chain stabilizer, this rear derailleur ensures quiet, safe, and precise shifting on mixed terrains. The stabilizer's ON/OFF switch enhances adaptability on slippery surfaces. Compatible with road bike cassettes up to a 42T largest sprocket, it offers synchronized shifting for a seamless riding experience.

Key Features:

• Advanced shifting system for quiet and smooth performance on uneven terrains.
• Adjustable chain stabilizer to prevent chain drops and enhance safety.
• SHIMANO SHADOW RD+ design for consistent, reliable shifting under varying conditions.
• On-demand stabilizer switch for tailored use according to terrain.
• Gravel-specific spring tension for optimal chain control.
• Compatibility with DUAL-CONTROL shift/brake levers for racing bikes.
• Supports a wide range of sprocket sizes, up to a max. 42T for the largest sprocket.
• Total capacity of 31Z, accommodating a variety of gear setups.

The Shimano GRX Di2 RD-RX817 Rear Derailleur is a pivotal component for gravel cyclists who value precision and adaptability in their electronic shifting system.