Reviews over the

Shimano GRX RX815 Di2

Once Di2, always Di2 - even if there is still room for improvement. Shifting precision, always the same amount of force, speedometer control from the handlebar and optional additional shifters and brake levers make the Di2 a valuable and practical companion. What's annoying: The distance between the brake pads and the disc is too small and regularly leads to grinding and squealing, especially when changing wheels, which requires a realignment of the brake calipers. The shift buttons are a bit too small and too narrow to hit the right one "blindly" at all times, especially with long gloves.

Pros & Cons