Factor Ostro Gravel first ride review from the King’s Cup Gravel weekend

We put it through its paces on hard packed chalky doubletrack, sandy sectors and wooded trails

Image shows Stefan Abram riding the new Factor Ostro Gravel bike.
(Image credit: Anna Abram)
Cycling Weekly Verdict

An unapologetic racing machine with great acceleration and pin-point handling. Already it’s been an absolute blast to ride – and I’m looking forward to testing out the claims regarding the tyre size optimisations. The only disappointments so far are the lack of compatibility with Campagnolo Ekar and that the entry-level complete build is still very expensive.

Reasons to buy
  • +

    Excellent acceleration

  • +

    Quick handling

  • +

    A super-bike for less than five figures

  • +

    Customiziable finishing kit

Reasons to avoid
  • -

    Electronic groupset only (no Campagnolo Ekar)

  • -

    The entry level build is expensive

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.

With Factor launching its new Ostro Gravel literally the day before the 2022 British Gravel Championships – and with the brand’s UK headquarters being a mere 30 miles from the event village – taking one to the start line was almost too good an opportunity to miss.

Alas, this was one of those times where the best laid plans did indeed go awry: a slash to the sidewall of the rear tyre spelt a frustrating end to my race.

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Stefan Abram
Tech features editor

After winning the 2019 National Single-Speed Cross-Country Mountain Biking Championships and claiming the plushie unicorn (true story), Stefan swapped the flat-bars for drop-bars and has never looked back. 

Since then, he’s earnt his 2ⁿᵈ cat racing licence in his first season racing as a third, completed the South Downs Double in under 20 hours and Everested in under 12.

But his favourite rides are multiday bikepacking trips, with all the huge amount of cycling tech and long days spent exploring new roads and trails - as well as histories and cultures. Most recently, he’s spent two weeks riding from Budapest into the mountains of Slovakia

Height: 177cm

Weight: 67–69kg