Factor One Dura Ace Di2

The Aero rules just changed!


Taking all that we learnt from its Vis Vires predecessor, the ONE has been built for all-out stiffness and aerodynamic performance to deliver you a significant advantage at the sharp end of races. Featuring our unique OTIS (ONE Total Integration System) one-piece integrated bar/stem, our proprietary external-steerer dual clamp design OTIS fork and the iconic Twin Vane split-downtube design, the ONE is as distinctive as it is peerlessly fast. Built with full Shimano Dura Ace Di2 with Black Inc Fifty carbon clincher wheels and rolling on CeramicSpeed bearings throughout, the ONE will make you faster, everywhere. The ONE is Factor Bikes’ most uncompromisingly aerodynamic race bike, conceived and created to deliver ultimate speed and a reassuringly stable and predictable ride for total confidence and control. 

Developed as a total aerodynamic system, the ONE has been created in collaboration with aerodynamic maestros bf1systems – one of the premier providers of wind-tunnel and downforce measurement to Ferrari, Aston Martin, Lamborghini, Maserati and multiple F1, Moto GP and WRC teams. Together, we have realised the pinnacle of aerodynamic performance in the ONE.

The OTIS fork works symbiotically with the Twin Vane split downtube to take the dirty turbulent air from the front wheel and funnel it through – rather than around – the downtube. This dynamic relationship delivers a meaningful advantage of 100g of aerodynamic efficiency at 40km/h compared to a non-split downtube design – equating to about one second per kilometre in savings. In addition to being at the aerodynamic front line, the OTIS fork is the lynchpin that binds together the ONE’s insatiable thirst for speed together with its inscrutable handling and ride confidence; how a bike handles and tracks whether descending, across cobbles, carving chicanes or dodging potholes is not just a function of the ONE’s advanced geometry and position: it’s also structural.

Featuring a dual clamp design that fixes to the steerer both beneath and on top of the headtube, the OTIS fork also mates directly with our custom one-piece OTIS bar and stem assembly. Together, this integration delivers exceptional aerodynamic performance, phenomenal front end stability, laser-guided steering precision and maximum stiffness. Go where you will with total line-holding confidence: from full-bore finish line sprints, railing banked turns, or effortlessly carving down Alpine descents: the ONE is the perfect synthesis of aerodynamics, speed and inspiring stability.

The Details

Our attention to detail on the ONE is absolute, from precisely controlling the material and resin production process, right down to everyday practical detailing that ensures that assembly and maintenance are as refined as the ride itself:

  • UCI legal
  • Our frame laminate design and manufacturing process ensures that we put the waste into the garbage can and not into the frame; using a computer programme called Fibersim, each layer is specifically cut to minimise any overlaps or extra materials where they are not required. The result: the strongest, lightest frame possible.
  • The ONE frame is made with three different carbon types, each selected for different performance characteristics. Standard Modulus, Medium Modulus and High Modulus Pitch Fibre. While the first two are common to the cycling industry the last – the Pitch Fibre – is far more rare because it’s difficult to work with and comes with very high cost. It is, however, the lightest and stiffest carbon available for bike frames that can be manipulated.
  • Choose from 15 possible permutations of our OTIS integrated bar width/stem length options for a precisely tailored fit: five stem length options: 90, 100, 110, 120 and 130mm; three bar width options: 400, 420 and 440mm.
  • Direct mount rear brake is tucked behind the bottom bracket for optimum aerodynamics.
  • Fully sleeved cable routings ensure crisp, long lasting shifting and braking performance, improve aerodynamics and aesthetics and ensure effortless practicality with hassle free cable assembly and maintenance.
  • The ONE has ample tyre clearance to allow the comfort and performance benefits that come from using wider, higher profile tyres – up to 25c.
  • The hidden seatpost clamp contributes to the ONE’s clean and uncluttered aesthetic and improves aerodynamics.
  • The BB386EVO bottom bracket system is extremely light, exceptionally stiff and is compatible with the majority of aftermarket cranksets, including: BBRight, BB386 EVO, standard Shimano, SRAM and Campagnolo 24mm external-type cranks.
Frame RGi Carbon construction, tapered/shaped 1-1/8" to size-specific lower head tube, compact pro race geometry, internal cable routing
Fork RGi Carbon, single OTIS, full monocoque, size-specific taper
Headset 1-1/8" upper, size-specific lower, Ceramic Speed cartridge bearings, Factor top cap
Stem Factor OTIS RGi Carbon integrated aero system
Handlebars Factor OTIS RGi Carbon integrated aero system
Tape Factor Hi Grip fraction tape
Front Brake Shimano Dura Ace BR-9010-F
Rear Brake Shimano Dura Ace BR-9010-R
Front Derailleur Shimano Dura Ace Di2 11-speed, braze-on
Rear Derailleur Shimano Dura Ace Di2 11-speed
Shift Levers Shimano Dura Ace Di2
Casette Shimano Dura Ace 11-speed, 11-28t
Chain Shimano Dura Ace 11-speed
Crankset Shimano Dura Ace
Front Wheel Black Inc Fifty clinchers, Ceramic Speed Bearings, Black Inc Aero Hub, Sapim CX Ray spokes.
Rear Wheel Black Inc Fifty clinchers, Ceramic Speed Bearings, Black Inc Aero Hub, Sapim CX Ray spokes.

Download geometry here. Please note that the bike will be provided with size specific OTIS Aero Bar and Stem, this can be varied to suit your fit requirements by liaising with your dealer. Please find here our OTIS fitting guide. 


Size 51 54 56 58 61
Stack 519 543 563 583 608
Reach 384 389 398 405 414
Seat Tube Angle 74.0° 73.5° 73.5° 73.0° 72.75°
Head Tube Angle 72.5° 73° 73.25° 73.5° 73.75°
Fork Offset 43 43 43 43 43
BB Drop 70 70 70 70 70
Chainstay Length 403 403 403 407 407
OTIS Stem 90 110 110 120 120
OTIS Bar (c-c) 400 420 420 440 440
Top Tube 530 547 562 580 600
Head Tube 103 126 146 166 191