Shimano has officially introduced the GRX RX827 Di2 1×12 drivetrain, marking its entry into fully wireless drop-bar technology. This new system combines road and mountain bike features, integrating Di2 shifting with a wireless rear derailleur inspired by the new Shimano XTR design. The RD-RX827 model enhances durability and performance with features like a short profile, automatic impact recovery, and sealed battery. Despite interest in a wireless drivetrain, Shimano waited to ensure their new technology was kept under wraps until the right moment to unveil it, hinting at more innovations to come.
If you're wondering what took so long? It was the fact that the GRX Wireless rear derailleur is basically the newly minted Shimano XT wireless rear derailleur (a GR-XT, let's say).
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