At the 2026 Traka gravel event in Girona, Spain, Factor unveiled a prototype aero gravel bike that draws heavily from the design principles of its One aero road bike. (bikeradar.com)
Design and Aerodynamics
The bike features a wide-splaying fork, a hallmark of the One, engineered to disrupt airflow before it reaches the rider’s legs, thereby reducing aerodynamic drag for trailing cyclists. This design is less pronounced than the One’s, with a slacker angle from the handlebars to the fork dropouts, likely to accommodate the handling requirements of gravel terrain. (bikeradar.com)
Additionally, the fork crown includes a chin protrusion, initiating airflow manipulation earlier than standard designs. The frame’s seat tube curves around the rear tire, similar to the prototype Ridley ‘RS2’, and the dropped seatstays are notably thin compared to the Ridley or the also-unreleased Canyon Grail CFR. (bikeradar.com)
Tire Clearance and Wheelsets
The design offers substantial tire clearance, accommodating up to 57mm tires. The bike was spotted with 42mm Michelin Power Gravel tires and 2.1-inch (53mm) Schwalbe Race Pro Thunder Burt MTB tires, indicating versatility for various gravel conditions. (bikeradar.com)
The front wheel features a small number ’64’, suggesting this is a new deep-section aero wheel from Factor that we might eventually see used on the road, too. (bikeradar.com)
Storage and Mounts
The bike includes a Monza-style down-tube storage, providing convenient space for essentials during long rides. However, it appears to lack additional storage bag mounts, with tools simply taped to the top tube. (bikeradar.com)
Conclusion
This prototype aero gravel bike from Factor exemplifies the brand’s commitment to integrating aerodynamic efficiency with the demands of gravel cycling. While still in the prototype phase, it offers a glimpse into the future of high-performance gravel bikes.