Tour de France Pro Gearing: A Deep Dive into Elite Cyclists' Choices

Professional cyclists in the Tour de France meticulously select their bicycle gearing to conquer the demanding stages, a practice that has significantly evolved from simpler times. With the advent of 12-speed systems from major manufacturers like Shimano, SRAM, and Campagnolo, riders now have an unprecedented array of choices. This detailed examination delves into the specific gearing setups favored by the elite peloton, highlighting how technological advancements and the increasing difficulty of race routes influence these critical decisions.

Unpacking the Gearing Strategies of Tour de France Professionals

During the intense summer of the Tour de France, on a sunny Wednesday, July 5, 2023, cycling enthusiasts turned their attention to the mechanical intricacies that propel the world's best riders. Unlike consumer-level bicycles, which typically feature compact 50/34t or 52/36t chainsets, professional cyclists prioritize larger chainrings to sustain comfortable cadences at the exceptionally high speeds encountered in races. The 54/40t chainset, a standard Shimano Dura-Ace offering, is a prevalent choice across many teams, exemplified by Dylan Groenewegen's Giant Propel. Other notable configurations include Edvald Boasson Hagen's classic 55/42t 11-speed setup and Enric Mas's 52/39t SRAM chainset. Georg Zimmermann of Intermarché – Circus – Wanty also prefers a robust 55/42T Rotor setup on his Cube Litening Aero, underscoring the diverse yet performance-oriented selections. Even neutral service bikes are equipped with versatile 52/36T chainsets, ready to assist any rider in need.

For time trial stages, where maintaining maximum speed is paramount, even larger chainrings are deployed. Luke Durbridge's TT bike, for instance, sports an imposing 58/46t chainset. A particularly extreme example from a previous Tour de France saw Stefan Bissegger utilizing a custom 64-tooth chainring, a piece of equipment far beyond what's available to the general public, demonstrating the extent of specialized modifications at this level.

Cassette technology has also undergone significant transformation. The transition from older 5- or 6-speed systems to today's 12-speed setups has dramatically expanded gear ranges. This evolution is partly a response to race organizers who continuously seek out more brutally challenging mountainous terrain. The increased number of gears allows for finer adjustments in cadence, enabling riders to maintain a consistent rhythm across varied gradients. Recent observations at the Critérium du Dauphiné revealed a widespread adoption of 11-30t and 11-32t cassettes, a stark contrast to the much smaller 11-21t or 11-23t cassettes of previous decades. Surprisingly, even 11-34t cassettes were spotted, such as on David Gaudu's Lapierre Xelius SL, indicating a growing preference for wider ranges to manage steeper climbs, especially with chainrings like the 40t becoming more common.

Innovations continue to push the boundaries. Campagnolo's updated Super Record EPS groupset now features cassettes with a 10t smallest sprocket, complementing redesigned chainsets available in 50/34t, 48/32t, and 45x29t options. Ben O’Connor’s BMC Teammachine, seen at the Dauphiné, showcased a 54/39t chainset paired with a larger-than-standard Campagnolo cassette, demonstrating personalized high-performance configurations. SRAM also contributes to this trend with its 10-33t cassette for Red eTap AXS, frequently paired with a 52/39t chainset, as observed on Jonas Vingegaard's bike. SRAM's design, starting with a 10t sprocket, allows for smaller chainrings to achieve comparable gear ratios to Shimano's 11t-starting systems, with additional 54/41t and 56/43t options now available.

The 1x system, featuring a single chainring and a wide-range cassette, has gained traction, notably with Jumbo-Visma riders Jonas Vingegaard and Wout van Aert in the Tour de France. This system offers benefits such as reduced gear duplication, lighter weight, improved aerodynamics, and fewer components to fail. While Jumbo-Visma frequently uses 1x for time trials and even hilly road stages, often with a Wolf Tooth LoneWolf Aero chainguide to secure the chain, its adoption reflects a calculated strategic choice rather than a mere marketing ploy by SRAM. The Classified Powershift drivetrain, which integrates front mech functionality into the rear hub, represents another fascinating innovation that could address the issue of gear jumps in 1x systems while offering aerodynamic advantages. This technology has been tested by teams like Uno X and Lotto-Dstny, raising intriguing possibilities for future Tour de France competitions.

The constant evolution in professional cycling gearing prompts reflection on its broader implications. While pros benefit from cutting-edge, specialized equipment, the wider cycling community is seeing a shift in focus from manufacturers. The growing diversity of cyclists, influenced more by long-distance road rides, adventure cycling, and bikepacking than by pro racing, is driving demand for wider-range groupsets with more practical gear ratios. This ensures that even those who don't race every Sunday can conquer challenging terrains, making advanced gearing more accessible and relevant to a broader spectrum of riders.