Racers who want a boutique aero-light bike. O2 VAM is the climbing sibling; LS is gravel.
Factor's aero-all-rounder: light enough to climb, aero enough to race, and a stiff, precise race bike that reviewers keep measuring against the Tarmac SL8.
Sprinters and fast road riders who picked aero over weight. If you wanted the climbing bike in this era, compare stack/reach against the Émonda instead.
Gen 7 Madone: a pure aero race bike built on Kammtail Virtual Foil tubes with the IsoFlow cutout for rear compliance. It is the fast, heavier half of Trek's race line — Émonda is still the light bike in these years.
CX and gravel racers who already like Santa Cruz. Not a bikepacking mule.
Drop-bar Santa Cruz: CX/gravel race geometry, not a touring bike. It feels like the brand's MTB handling translated to drop bars.
Racers and fit club riders who want a low stack without full aero integration. If the Aeroad cockpit feels like too much, this is the sibling.
Canyon's lightweight race bike: snappy, precise, and less of a wind-cheater than the Aeroad. It rewards a committed position and calm hands in corners rather than a slammed aero tuck.
| Measurement |  FactorOstro VAM 2026 |  TrekMadone SLR 2022 |  Santa CruzStigmata 2024 |  CanyonUltimate CF SLX 2022 |
|---|---|---|---|---|
| Stackmm | 562 | 563+1 | 589+27 | 570+8 |
| Reachmm | 390 | 390 | 415+25 | 389−1 |
| Head tube angle° | 73.3 | 73.5+0.2 | 69.5−3.8 | 73.3 |
| Seat tube angle° | 73.2 | 73.3+0.1 | 74.0+0.8 | 73.5+0.3 |
| Chainstaymm | 405 | 410+5 | 430+25 | 410+5 |
| Wheelbasemm | 995 | 987−8 | 1075+80 | 994−1 |
| BB dropmm | 70 | 70 | 72+2 | 72+2 |
| BB heightmm | — | — | — | — |
| Standovermm | — | — | — | — |
| Part | Ostro VAM 56 | Madone SLR 56 | Stigmata 56 | Ultimate CF SLX M |
|---|---|---|---|---|
| Stem | 100 mm | 100 mm | 100 mm | 100 mm |
| Bar | 420 mm | 420 mm | 420 mm | 420 mm |
| Crank | 172.5 mm | 172.5 mm | 172.5 mm | 172.5 mm |
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