Shimano launches a new wireless GRX groupset, incorporating merely two innovative components.
Gravel Shifting Gear Up: Shimano's Wireless Triumph
June's Shimano Adventure: We've seen some major moves from Shimano this month: they've debuted their first-ever wireless XTR groupset _and swiftly followed it with the unveiling of the lower-tier Deore XT wireless groupset. But the drama didn't end there - they've also introduced the GRX wireless Di2 groupset!
Unlike the XTR or XT groupsets, this GRX iteration isn't entirely new. Instead, it's a clever combination of a fresh wireless rear derailleur and a revamped left-hand shifter, working in sync with existing components to create a fully wireless, 1x gravel groupset.
Two Steps Forward, One Groupset:
Shimano's GRX Lineup Already Rocks: The GRX gravel groupset already boasts numerous versions, including the flagship 2x12 Di2 version and second-tier cable-actuated 1x and 2x12 offerings. This means a diverse pool of components to customize and experiment with to form a brand-new setup.
Enter the stage: Shimano's new wireless rear derailleur - the RD-RX827, inspired by the designs of the XTR and XT rear derailleurs. This wireless marvel can be paired with GRX cranks and cassette, the wireless right-hand shifter from the 2x Di2 drivetrain, and a streamlined, button-free BL-RX825-L left-hand shifter.
Mix and Match to Match Your Style:
Riders have options - they could opt for a dropper-specific GRX lever that doubles as a mechanical dropper post actuator or run a standard pair of 2x levers and utilize the redundant Di2 shifter paddles for additional controls like computer screens.
A Lean, Mean, Wireless Machine:
The New Wireless Rear Derailleur: This RD-RX827 derailleur is available exclusively in a long cage version, designed to work with the micro spline 10-51t cassette. However, it's said to be compatible with other 12-speed cassettes.
Like its XTR and XT counterparts, the new derailleur boasts a removable battery for off-bike charging, a design that shields against rock strikes, and rounded edges to minimize trail debris snags. A new dual-spring design, borrowed from the MTB derailleurs, reportedly improves chain retention.
At 449g and with a battery range of 700 to 1,000km, this bad boy is built to perform.
Down to the Wireless Fine-Tuning:
While the RD-RX827 is compatible with existing 2x shifter hoods, it leaves you with redundant shifter paddles. Enter the BL-RX825-L left-hand shifter, a stripped-down version that retains only the hydraulic brake lever, making control smoother and less complex.
The current RX825 right-hand lever takes charge of shifting duties while the remaining spare buttons on the left-hand shifter can be used for additional controls like smart lights or computer screens.
The Future of Gravel Gearing:
- pricing and availability details have yet to be revealed.*
_[1] StradaSport (2023). If you want more details on these innovative Shimano offerings, check out our deep dive here.
_[2] Bicycling (2023). Each new Shimano XT and XTR derailleur faces up to twice the impact forces compared to chainring-mounted impact forces of the burly XTR derailleur](url).*
_[3] BikeRadar (2023). Shimano GRX may receive wireless Di2 update with new wireless left shifter](url).*
_[4] RoadBikeReview (2023). Shimano GRX Di2 Wireless Left-hand Shifter for 1x :](url).*
Gadgets and Technology:
The new GRX wireless Di2 groupset introduced by Shimano is a testament to the latest advancements in gadgets and technology, as it integrates wireless derailleur and shifter technology to create a 1x gravel groupset.
The RD-RX827 wireless rear derailleur, inspired by the designs of the XTR and XT rear derailleurs, employs wireless technology to communicate with its pairings, further reflecting the technological evolution in bicycle components.
