The Factor O2 VAM is light and stiff - though we had to check some QC concerns

The Factor O2 VAM is 6.3kg of pure superbike

Factor O2 VAM 2023 on a grey background
(Image credit: Future (Richard Butcher))
Cycling Weekly Verdict

The Factor O2 VAM has certainly cemented itself as one of the lightest disc road race bikes on the market, and it rides as well as you would imagine. As an owner of the previous generation O2, I was glad to see the improved frame stiffness, which adds to what was already an engaging ride. If you are a true weight weenie looking for a new super bike, the Factor O2 VAM should make your shortlist.

Reasons to buy
  • +

    Lightweight frame allows for UCI rule-breaking builds

  • +

    Improved head tube stiffness gives the bike a confident feel on descents and climbs alike

  • +

    A stellar-looking frameset

Reasons to avoid
  • -

    Not quite as fast as the competition when gliding along the flat

  • -

    Some components lack the build quality of other brands

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

The Factor O2 VAM is another road bike in 2023 that has looked to captivate the weight-weenie audience instead of going all out with aero claims. Debuting at this year's Tour de France, the new O2, with its 730g claimed frame weight is clearly right in the superbike category, but how does it ride?

We knew even from our first ride of the Factor O2 VAM that this bike was a real contender in the superbike space, and it has continued to impress us since - bar one or two slight mishaps. If you're in the market for one of the best road bikes, the Factor O2 VAM should definitely make the shortlist.

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Joe Baker
Tech Writer

Joe is Cycling Weekly's tech writer. He's always had a love for bikes, since first riding a two wheeled steed before the age of four. Years down the line, Joe began racing at 16, and enjoyed great experiences internationally, racing in Italy, Spain and Belgium to name a few locations. Always interested in tech, Joe even piloted his Frankenstein hill climb bike to a Junior National Title in 2018.  After taking a step back from elite level racing in April 2022, Joe joined our team as a freelancer, before becoming Tech Writer in May 2023.