Factor Bikes · Road
Factor ONE Aero Road Bike
A stupendously fast aero road bike from the best in the business
Factor ONE doesn't just blow past fast; it changes the game.
We’re going to need a new word for speed. Factor ONE doesn’t just blow past fast; it changes the game. An unashamedly advanced road bike built to bring whole-stage aerodynamics to the world’s premier bike races, the Factor ONE delivers hitherto unseen levels of innovation for the rider seeking hyper-radical performance.
Specifications
- Frame Weight
- 900g (size 54)
- Fork Weight
- 540g
- Cockpit
- Integrated bar system with no traditional stem — sizes 1-5 map to 110-150mm stem equivalents, 210g (size 3)
- Seatpost
- Adjustable head, 73.5 or 76 degree effective seat tube angle, 230g
- Fit Range
- Up to 15mm of spacers, 35mm of shifter stack height range
- Bottom Bracket Drop
- 75mm (77mm on sizes 47 and 52)
- Sizes
- 47, 52, 54, 56, 58cm
- Compatible Components
- Electronic
- Wheelset
- Black Inc SIXTY TWO
- Max Tire Clearance
- 34mm measured, aero optimized for a 28mm tire on a 23mm internal rim
- Measured Weight
- 16.64 lbs — size 54 with SRAM Red E1, Black Inc 62 wheels, bottle cages and computer mount, no pedals
- Manufacturer Warranty
- Limited Lifetime Warranty
From the ReviewThe Making of the Factor ONE Bike
More about the Factor ONE
Factor ONE isn't just another aero machine because it's unlike anything else on the road. As a radical reinterpretation of an aero bike and a clear-eyed reassessment of what it takes to win a Grand Tour stage, the Factor ONE is the culmination of a decade‑long vision to make pure, unfiltered speed the default for professional - and amateur - road cycling.
Born from a "breakaway" concept and refined through years of game-changing fluid dynamics, track‑bike research, and real‑world data, the bike delivers race‑winning performance without sacrificing comfort. Its radical geometry, integrated front‑end stiffness, and that incredible front-end let riders spearhead the sprint longer and maximise whole-stage average speeds. At the same time, the ergonomics keep them relaxed enough to stay fast over hours of challenging parcours. In short, Factor ONE is the world's fastest, most adaptable road bike – built for riders who want to break speed records and take their pursuit of performance to extraordinary levels.
Things feel easier over 50k/hour. The bike almost lifts underneath you. It practically begs you to push down harder.
We have spent real time with this bike. Read our Factor ONE review, forty years in the making, see how the ONE is made, or let our ONE vs OSTRO VAM taste test help you choose between the two. And if your racing has a clock in it, the same frame now comes as the ONE SP, with a purpose-built time trial front end.
We simply wanted to make the world's fastest road bike and help riders win races. That was all.
Graham Shrivefrom The Making of the Factor ONE Bike
Speed Details
Aero Meets Comfort
The bold geometry of the Factor ONE may look extreme, but every line serves a purpose. By decoupling the mounting area of the bar and stem from the frame’s center axis of rotation, the bike gains 50% more handlebar stiffness over the brand's AB02 model, while allowing a limited stack increase (spacers + secondary bar) that preserves an aero profile. The result: a rider-first position that stays comfortable for long-duration efforts, translating comfort directly into speed.
Fit Without Compromise
No traditional stem means a clean, aerodynamic front end. Instead, Factor ONE uses a simple numbered “stem-equivalent” system (1–5) that maps directly to Ostro stem lengths, letting fitters dial in the exact reach without adding weight or drag. Combined with 15mm of stock spacers and optional secondary bars (+20mm), the bike offers a ±35mm fit range while keeping the aero envelope intact.
Size-Specific Handling
Small frames (54cm and below) receive the steepest head-tube angles (up to +2.5°) to preserve front-center distance, delivering razor-sharp handling and reduced “flop” at low speeds. Larger frames (56–58cm) gain a longer wheelbase and lower bottom bracket, giving a stable, confidence-boosting feel that lets riders “sit in the bike” rather than on it. Across the range, the bike feels uniformly snappy and predictable.
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About the brand
Factor Bikes
Performance, always performance. It's an overused word in the bike industry, if not everywhere, but Factor differentiates itself from the rest of the pack with its single-minded focus on speed. The engineering team at Factor combines decades of experience developing at the cutting edge of the sport. Factor's motto of 'Never Status Quo' is no off-the-cuff idea. It's the founding principle behind everything the brand creates.
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