Description
Approved used bike with some cosmetic signs of use to the shifters, rear derailleur, fork and downtube
Factor O2 VAM Ultegra Road Bike
Whether you’re chasing Strava KOMs, taking on the Étape du Tour, or descending mountain passes at full tilt, the Factor O2 VAM Ultegra Road Bike delivers the perfect balance of weight, stiffness, aero efficiency, and handling precision. It’s the ultimate choice for cyclists who refuse to compromise. Add to the mix smooth Shimano shifting, and you have a bike that won't hold you back as gradients hit double digits.
Born to Climb – Lightness Without Limits
The O2 VAM was designed from the ground up for pure climbing performance. Weighing just 6.4kg (size 54 with Dura-Ace Di2 build), it sits among the lightest disc brake bikes ever built – yet remains fully aerodynamic. Constructed using ultra-high-grade carbon fibre and a new manufacturing process developed in Factor’s own factory, the O2 VAM achieves an unrivalled stiffness-to-weight ratio. Every pedal stroke translates directly into forward motion, making long climbs feel smoother and faster than ever before.
Aerodynamics That Defy Gravity
Unlike traditional climbing bikes, the O2 VAM doesn’t sacrifice aero gains for lightness. Its meticulously optimised tube shapes reduce drag so effectively that, in the wind tunnel, it’s only 5 watts behind the OSTRO VAM – the fastest aero bike in the world. Across all wind angles, the O2 VAM cuts aerodynamic drag by 50% compared to its predecessor. It flies uphill and still outpaces many dedicated aero models on the flats.
Unrivalled Stiffness and Handling Precision
Factor’s engineers ensured the O2 VAM handles as brilliantly as it climbs. Sharing its geometry with the OSTRO VAM, this bike offers razor-sharp handling, confidence-inspiring cornering, and exceptional stability on high-speed descents. Its incredible stiffness means explosive acceleration when you stand on the pedals, while the new Black Inc 28//33 wheelset adds featherweight performance and aerodynamic balance. Combined with 32mm tyre clearance, the O2 VAM adapts perfectly to any road condition without compromising efficiency or control.
- Certified Quality & Peace of Mind
Every bike is meticulously inspected to the highest safety standards and comes with a one-year warranty*, ensuring reliability and performance you can trust. - Premium Bikes, Lower Prices
Own a high-end bike for less – get access to top-tier brands and models at a fraction of the cost, making performance cycling more affordable. - Sustainable & Eco-Friendly Choice
Choosing a pre-owned bike helps reduce waste and extends the life of quality bicycles, making it a greener way to ride. - Hassle-Free Trade-In & Upgrade
Easily part-exchange your old bike for an upgrade, making it simple to switch, save, and keep riding the best bike for your needs
Approved Used Warranty Information
Technical Specification
| Frame | Factor Vam O2 Carbon, 2023, size 56cm |
| Fork | Factor O2 Vam Aero Carbon Fork |
| Headset | CeramicSpeed SLT 1-1/8" and 1-3/8" |
| Bottom Bracket | CeramicSpeed PF4630, with 24mm reducer for Shimano |
| Stem | Black Inc Integrated Barstem 120mm -6° |
| Handlebar | Black Inc Integrated Barstem 42cm |
| Levers/Shifters | Shimano Ultegra BR-R8170, Hydraulic disc, 160mm rotor front, 140mm rear |
| Front Derailleur | Shimano Ultegra FD-R8150, 2x12 speed Di2, braze-on |
| Rear Derailleur | Shimano Ultegra RD-R8150, 12 speed Di2 |
| Cassette | Shimano Ultegra CS-R8101, 12 speed, 11-34T |
| Crankset | Shimano Ultegra FC-R8100, 2x12 speed, 50/34T, 172.5mm cranks |
| Wheels | Black Inc Forty Five Carbon TLR, 45mm deep rim |
| Tyres | Continental GP5000S TR, 700x28c, sealant installed |
| Saddle | Velo G, CR-Mo rails |
| Seatpost | Black Inc. VAM Carbon, 25mm setback |
| Pedals | Available to be purchased separately |
Size Guide
Factor Vam O2 2023 56cm - Approved Used Sizing
Delivery & Returns
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Why buy a used bike from Sigma Sports?
Every bike is meticulously inspected to the highest safety standards and comes with a one-year warranty*, ensuring reliability and performance you can trust.
Own a high-end bike for less – get access to top-tier brands and models at a fraction of the cost, making performance cycling more affordable.
Choosing a pre-owned bike helps reduce waste and extends the life of quality bicycles, making it a greener way to ride.
Easily part-exchange your old bike for an upgrade, making it simple to switch, save, and keep riding the best bike for your needs.