Shimano GRX RX717: Wireless Gravel Di2 Goes Mainstream
▼ Summary
– Shimano has launched the new GRX RX717, a more affordable, fully wireless gravel component range to compete with SRAM’s Rival AXS XPLR.
– The RX717 components are aligned with Shimano’s 105 Di2 level and feature a mix-and-match approach, including compatibility with other Shimano 12-speed wireless shifters.
– The system includes a new rear derailleur based on the Deore model, featuring a protected battery, skid plate, and Automatic Impact Recovery function.
– The GRX 12-speed ST-RX715-R right-hand lever is a fully featured, more affordable option powered by two batteries claimed to last up to four years.
– While SRAM maintains a slight aftermarket price and weight advantage, Shimano’s strength in the original equipment market is expected to make complete bike prices very competitive.
Shimano’s latest GRX RX717 series marks a significant shift, bringing fully wireless electronic shifting to gravel cycling at a more accessible price point. This move directly challenges SRAM’s established Rival AXS XPLR groupset, signaling a new phase of competition in the gravel component market. By positioning RX717 alongside its 105 Di2 tier, Shimano aims to deliver advanced wireless technology without the premium cost, making it a compelling option for riders seeking to upgrade their gravel bikes.
This new groupset follows the earlier introduction of the higher-end RX827. The RX717 rear derailleur is a fully-featured Di2 unit that utilizes the same compact, removable battery found across Shimano’s wireless mountain bike range, including XTR and Deore models. It inherits the robust design philosophy from its off-road siblings, featuring a low-profile Shadow ES design for increased ground clearance, a protective skid plate, and the useful Automatic Impact Recovery function that realigns the derailleur after a knock.
A key strength of Shimano’s 1x Di2 system is its extensive compatibility. The RX717 components are designed to work seamlessly with all of Shimano’s 12-speed wireless shifters. This includes GRX, Dura-Ace, Ultegra, and 105 Di2 options for drop-bar bikes, as well as XTR, Deore XT, and Deore Di2 models for flat-bar setups. This mix-and-match approach provides riders with exceptional flexibility when building or customizing their bikes.
Rather than a boxed groupset, the RX717 offering consists of new shifter/brake levers and a rear derailleur. These can be paired with a 12-speed, 10-51 tooth cassette to create a complete 1x drivetrain. The right-hand ST-RX715-R Di2 lever is a hydraulic disc brake unit with integrated wireless shifting controls. It offers reach adjustment and can be customized via Shimano’s E-Tube Project app. Power comes from two user-replaceable CR1632 batteries housed in the hood, with Shimano claiming a battery life of up to four years.
The matching left-hand lever is a brake-only unit, sharing the same ergonomic hood shape and adjustability as the right side but without the Di2 button assembly. It is available with either GRX or standard Shimano branding.
Inspired by the Deore mountain bike derailleur, the RX717 rear mech packs in the technology. Alongside the impact recovery and skid plate, it features a chain-stabilizing clutch to minimize bounce and a protected battery housing for security and easy charging. The use of a common battery across multiple product families simplifies sourcing spares and allows riders to share batteries between different bikes.
The direct competition with SRAM’s Rival AXS XPLR is clear. SRAM’s system uses a 13-speed cassette and requires a frame with a Universal Derailleur Hanger (UDH). On paper, Shimano’s derailleur is slightly heavier at 494 grams compared to SRAM’s 435 grams. Component pricing also shows a difference, with the Shimano rear derailleur and shifters carrying a higher individual retail price than their SRAM Rival counterparts.
However, the complete bike market may tell a different story. Shimano’s formidable presence with bicycle manufacturers (the OEM market) could lead to very competitive pricing when RX717 is specced on new models. For riders, the arrival of a more affordable wireless Di2 option from Shimano expands choice and is likely to accelerate innovation and value across the entire gravel segment.
(Source: Bike Radar)