The Shimano GRX DI2 FD-RX825 Brazed-on Front Derailleur is a high-performance, 2x12 speed component designed for gravel and mixed-terrain riding. Featuring quick and precise front shifting even under heavy loads, this derailleur offers a wider gear range and compatibility with Full or Semi-Synchronized shift modes, as well as the new FRONT SHIFT NEXT function for greater rider customization.

Key Features:
  • Quick and Precise Front Shifting: Delivers smooth and efficient shifting performance, even in demanding conditions
  • Wider Tire Clearance: Chain line is +2.5mm compared to conventional road front derailleurs, providing extra clearance for unforeseen mud sections or larger tires
  • Wider Range Front Gearing: Supports a 17T difference between front chainrings, offering a wider gear range for varied terrain and riding styles
  • FRONT SHIFT NEXT Functionality: Programmable one-button, two-function feature for simplified front shifting, enhancing rider customization
  • 2x12 Speed Configuration: Provides a wide range of gears for efficient pedaling and climbing performance
  • Compatible Chain: HG 12-speed, ensuring seamless integration with Shimano's 12-speed drivetrains
  • Action: Down swing, optimized for gravel and mixed-terrain riding
  • Mount: Braze-on, providing a secure and reliable connection to the frame
  • Chainline: 47mm, matching the GRX crankset for optimal performance
  • Chainstay Angle: 63-66 degrees, suitable for a range of frame geometries
  • Top Gear Teeth: 48T, accommodating a wide range of chainring sizes
  • Total Capacity: 17T, allowing for a variety of chainring combinations
  • SD300 Port: Provides a connection point for the electronic shifting system

Who is it for?
The Shimano GRX DI2 FD-RX825 Brazed-on Front Derailleur is designed for gravel and mixed-terrain riders who seek a high-performance, reliable, and efficient gear system.
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