.
.
.
#ShimanoGRX #WirelessDrivetrain #GravelBiking #XTRDi2 #XTRWireless #GRX827 #Bikepacking #GravelRiders #ShimanoTech #ElectricGroupset #MountainBikeGear #ShimanoXT #DeoreWireless #HyperglidePlus #MicrosplineTech
Source link
Shimano has recently made significant strides in wireless drivetrain technology with the launch of its Wireless XTR Di2 (alongside XT and Deore), paving the way for a new era in gravel cycling. The buzz around a wireless gravel groupset has been building since the release of the 2×11 GRX groupset in 2024, which left many wondering where the single-ring version was. Riders, especially those into bikepacking or tackling steep mountain passes, had already embraced the 1×12 cable-shifted version for its wide gear range. However, Shimano’s strategy was clear: it needed to first revamp its aging XTR mountain bike groupset before introducing a wireless gravel drivetrain.
With the arrival of wireless XTR, XT, and Deore, the stage was set for Shimano to unveil the GRX RX827, its first fully wireless drop bar groupset. This marks a significant milestone, as even top-tier Dura Ace still relies on hard-wired front and rear derailleurs powered by a frame-mounted battery. The RX827 introduces a wireless rear derailleur, making it a game-changer for gravel riders who need the reliability and convenience of wireless shifting.
Key Features of GRX RX827
-
Wireless Rear Derailleur:
The RX827 features a single, long-cage rear derailleur compatible with a 10-51T XT-level cassette, offering a wide gear range suitable for steep climbs and varied terrain. The derailleur incorporates several innovations from Shimano’s recent mountain bike components, including a removable battery, a low-profile wedge-shaped design, and a crash recovery system that disengages the motor after an impact and re-engages it afterward. The complete derailleur weighs 449g, making it compact and durable despite its size. -
Cassette and Wheelset Compatibility:
The cassette runs on Shimano’s Microspline freehub, and Shimano is also introducing alloy-rimmed GRX wheels designed to accommodate both Hyperglide and Microspline cassette bodies. This flexibility allows riders to choose the setup that best suits their needs. -
Crankset Options:
The RX827 uses the existing single chainring crank available in 40T or 42T sizes. While these ratios may not be low enough for some loaded riders, Shimano acknowledges that many may opt for a hybrid mountain bike setup, stating that the RX827 is designed for “drop bar mountain/adventure bikes that utilize mountain bike crank standards.” -
Brake Levers:
The new brake levers are designed to handle braking duties exclusively, with no dropper shifter option on the left-hand lever. This seems like a missed opportunity for riders tackling extreme terrain, as a dropper post could enhance control and safety. - Battery System:
The derailleur’s removable and rechargeable battery is compact and easy to swap, making it convenient for long rides or multi-day adventures. Riders can carry a spare battery without adding significant weight or bulk to their setup.
Why This Matters
The RX827 is a significant development for gravel riders who prioritize wide gear ranges, reliability, and wireless convenience. It’s particularly suited for those who take on loaded bikepacking trips or challenging off-road routes with steep climbs. The integration of wireless technology from Shimano’s mountain bike groupsets ensures that gravel riders now have access to the same cutting-edge features as off-road enthusiasts.
What’s Missing?
Despite its advancements, the RX827 isn’t without its limitations. The absence of a dropper shifter option on the left-hand lever is a notable oversight, especially for gravel riders tackling technical terrain. Additionally, Shimano has yet to announce a more affordable 600 series electric groupset, akin to the XT/Deore offerings on the mountain bike side. This could limit accessibility for budget-conscious riders.
Final Thoughts
The GRX RX827 is a logical and highly anticipated addition to Shimano’s gravel lineup. It combines the best of Shimano’s mountain bike innovations with the demands of gravel riding, offering a robust and versatile wireless drivetrain. While there’s room for improvement—particularly in terms of gear ratios and dropper post integration—the RX827 is poised to become a favorite among adventurous cyclists. Shimano’s commitment to innovation ensures that gravel riders now have access to cutting-edge technology previously reserved for road and mountain biking.
As the cycling world evolves, the RX827 sets a new standard for gravel drivetrains, blending performance, simplicity, and durability into one sleek package. Whether you’re grinding up a mountain pass or cruising remote trails, this groupset is designed to keep you shifting smoothly and reliably, no matter where your ride takes you.
Stay tuned for updates as we explore the RX827 in person at the pre-Eurobike launch event.
