Paris Roubaix Tech: 35mm Tires, MTB Derailleurs and More

The 2026 edition of Paris-Roubaix has seen a significant shift in technical priorities, as professional teams increasingly adopt equipment traditionally reserved for mountain biking and gravel racing to combat the race’s punishing cobblestones.

The most prominent trend observed at the race pits was the widespread adoption of 1x drivetrains. Both SRAM and Shimano sponsored teams utilized these simpler, lighter systems, which are designed to reduce the likelihood of chain drops through the integration of chain guides.

Convergence of Road and Off-Road Technology

The technical boundary between road racing and mountain biking blurred further as teams integrated high-end MTB components into their setups. Ineos Grenadiers notably utilized Shimano XTR wireless rear derailleurs, chosen for a robust build quality intended to withstand impacts from trail obstacles—a characteristic deemed ideal for the rigors of the Roubaix cobbles.

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Ineos Grenadiers paired these MTB derailleurs with a 1x chainring configuration. Similarly, Team TotalEnergies Pro Cycling employed a mix of Shimano XTR mountain bike rear derailleurs and Shimano GRX Di2 gravel rear derailleurs across their fleet of Cube bikes.

The GRX Di2 gravel derailleur was adopted by multiple teams due to its clutch mechanism, which helps keep the chain secure on the drivetrain, and its wider cage, which allows for the use of larger cassettes.

Pushing Tire Width Limits

While modern race bikes generally offer tire clearance beyond 32mm, most riders typically do not utilize the full extent of that space. However, Tadej Pogačar broke this trend by maximizing the clearance on his Colnago Y1Rs, running 35mm Continental Grand Prix 5000 S tires.

This move toward wider tires is part of a broader trend toward increased stability and comfort on the sector’s most demanding surfaces. Pogačar’s setup was complemented by a high level of redundancy; he had three spare bikes available during the race, though he briefly utilized a blue Shimano neutral service bike.

Specialized Componentry and Hacks

Beyond drivetrains and tires, several teams employed niche technical solutions to gain marginal advantages or increase reliability:

• Team TotalEnergies largely utilized a Carbon Ti single-chainring setup, although some of their spare bikes retained the standard Shimano Dura-Ace Di2 R9200 groupset.
• Ineos Grenadiers used 3D-printed mounts for the official race transponders.
• Filippo Ganna installed satellite shifters on his handlebar tops to ensure easy access to gear changes while navigating the cobblestones.
• Red Bull – Bora – hansgroghe implemented a tubular-era tire hack.

Not all experiments were successful. Mathieu van der Poel’s squad experienced a pedal faux pas, and reports indicated that unreleased Shimano pedals using new cleats were involved in a disaster at the Arenberg forest.

Race Outcomes and Performance

The technical evolution of the bikes coincided with a high-speed edition of the race. Wout van Aert won what has been described as the fastest-ever edition of Paris-Roubaix.

The move toward 1x systems and MTB-grade components reflects a broader strategic shift in the Queen of the Classics, where reliability and vibration dampening are now being prioritized alongside traditional aerodynamic and weight goals.