Shimano's GRX gravel groupset just got a major upgrade, offering a range of new features that will delight gravel cyclists everywhere. One of the most notable additions is the introduction of shorter crank lengths, specifically 160mm and 165mm, alongside the existing 170mm, 172.5mm, and 175mm cranks. This move is a strategic response to the growing trend of shorter cranks, which can enhance pedaling efficiency and reduce joint strain, particularly for long gravel rides and races. The shorter cranks are also advantageous for shorter riders and can improve ground clearance on technical terrain.
This development comes as no surprise, given the recent experimentation with shorter cranks by professional cyclists like Jonas Vingegaard, who has been spotted using cranks as short as 150mm. Shimano's decision to offer shorter cranks aligns with the industry's shift towards more efficient and ergonomic designs.
In addition to the shorter cranks, Shimano has also expanded its chainring options for the GRX RX800 series. The new 44-tooth and 46-tooth chainrings are designed to cater to faster riders who want to spin more efficiently. These larger chainrings offer a bonus of lower friction from reduced chain articulation, which is particularly beneficial for gravel racing and flat terrain.
The ability to swap the new 44-tooth and 46-tooth chainrings into the current GRX 800 series and 600 series cranks is a significant advantage for existing users. This flexibility allows riders to customize their setup to suit their specific needs and preferences.
While Shimano has made these improvements, it's worth noting that SRAM has also been a pioneer in this area. SRAM's Red XPLR and Force XPLR chainrings offer a range of crank-arm lengths, including 160mm, 165mm, 170mm, and 175mm, with the 167.5mm length omitted. Additionally, SRAM's Red Thread Mount 1x chainrings come in 38, 40, 42, 44, and 46-tooth sizes.
In conclusion, Shimano's latest update to the GRX gravel groupset demonstrates a commitment to innovation and rider customization. The introduction of shorter cranks and larger chainrings provides gravel cyclists with more options to optimize their performance and comfort. As the industry continues to evolve, it will be fascinating to see how these advancements shape the future of gravel cycling.
