SHIMANO GRX RX825 Di2 12V 31/48 Teeth 172.5mm Complete Package

Designed for gravel bikes adventure-seekers, fun-seekers and even competitive riders the Shimano GRX Di2 12-speed complete groupset offers a precise, stable and reliable transmission in all conditions.

It features comfortable curved shifters in electronic version offering more control thanks to the anti-slip coating, a Shimano Shadow RD+ rear derailleur for better chain retention, and a front derailleur designed for precise gear changes. It comes with an RX820 double 31/48-tooth crankset and an 11/34-tooth cassette for optimum pedaling cadence. Its internal battery also simplifies charging and is protected from dirt, stones and external elements. What's more, the RX825 range uses a wider chain line, +2.5mm, 
for greater clearance on wide tires.

Thanks to the Shimano E-Tube Project Cyclist application, cyclists can choose between different shifting intervals, customize shift button assignments or program different shifting modes. 
such as Synchronized and Semi-Synchronized modes.

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