New Shimano GRX RX825: Everything You Need to Know About the First 12-Speed Di2 Gravel Group
GRX Di2 Semi-Wireless
The GRX RX825 stands out in several ways. Firstly, it is Shimano’s first 12-speed gravel groupset. More importantly, it marks an evolution in Di2 shifting technology, providing a smoother and more responsive riding experience.
Di2 shifting is not new to the gravel range, having debuted when GRX emerged as the “first gravel-specific groupset” in 2019. However, this new semi-wireless system sets the GRX RX825 apart from older wired systems. The derailleurs still connect to a central battery, but the shifters are now wireless, greatly simplifying installation and maintenance.
New Di2 Wireless Cockpit
The mechanical 12-speed GRX groupset had already introduced ergonomically designed levers, and the new Di2 groupset follows this trend. The new dual control levers are optimized for flared handlebars, popular in the gravel world. The round design of the levers and a larger surface area between the handlebar and hoods help eliminate pressure points. The hoods are also raised, and the brake levers have anti-slip textures for increased safety on rough terrains.
Shimano Shadow RD+ Rear Derailleur
The GRX RX825 also utilizes Shimano’s Shadow RD+ technology, found across many of the brand’s groupsets. This system uses a clutch to tension the chain and prevent it from bouncing around or slapping against the stays when riding bumpy terrain, a common issue during gravel rides. The clutch can be engaged via a switch on the derailleur.
Shimano GRX RX825 Weight and Price
The ST-RX825 dual control levers with hydraulic disc brakes weigh 415g per pair. The RD-RX825 rear derailleur weighs 310g, and the FD-RX825 front derailleur weighs 142g. Prices have yet to be confirmed, but you can explore the new groupset in more detail on Shimano’s website, with all details coming soon to Bicycles Quilicot!
Announcing E-Tube Project Customization and Front Shift Next
Using Shimano’s E-Tube Project rider phone app, riders can choose between different gear shift intervals for multi-shift. They can also customize shift button assignments to determine which buttons perform which functions. It has different automatic shift modes, such as synchronized or semi-synchronized, and fine-tuned shifting details.
The launch of RX825 dovetails with the debut of Shimano’s new Front Shift Next functionality.
With this firmware update, riders can now utilize Shimano’s E-Tube Project app to program any 12-speed Di2 button to shift the front derailleur. This new firmware is compatible with Shimano’s family of 12-speed road Di2 groups.
Why Front Shift Next? To free up more space with switches and use them for other gear on the bike. Shimano feels the “result is simpler, more intuitive shifting for less-experienced riders and quicker decision-making for veteran riders in the heat of competition.”
Conclusion
The new GRX RX825 represents a major step forward for gravel cyclists, offering improved performance and increased integration with other Shimano groupsets. For those looking to stay at the cutting edge of gravel technology and appreciate Shimano’s Di2 technology, look no further. The GRX RX825 is a must-have choice that promises to transform your rides into an even more exceptional experience.
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