Brand size guide
Factor size calculator
Choose your Factor model, add your height and inseam, and see which frame size suits you on that bike. Factor sizing is set model by model, so the check runs on the geometry of the model you pick.
Find your Factor size
Frame sizes differ between models, so pick the bike you are considering.
Quick size check
What Factor OSTRO VAM size fits you?
Get an instant frame estimate, then continue into the full fit report to check cockpit reach, bar drop, and setup risks before you buy.
Your measurements have been calculated for this bike. Exact sizes, rankings, setup numbers and risk details are ready in the full report.
Calculating…
No account needed for this check. The full report keeps this bike preselected.
How Factor sizing works
TrainCraft covers 5 Factor models, and all of them use numbered sizes. A number is a nominal frame size, not a measurement of the rider: the same number can carry different stack and reach from one model to the next.
Stack and reach decide how a frame fits. Each model below lists them for every size, and the calculator reads your result against that geometry.
Factor models you can check
Open a model for its geometry and size chart, or select it in the calculator above.
Frequently asked questions
- What size Factor should I get?
- It depends on the model as much as on you. Factor frame sizes are set per model, and two riders of the same height can need different sizes depending on inseam and torso length. Pick your model in the calculator at the top of this page, enter your height and inseam, and the check shows which size fits you.
- How do I find my Factor frame size?
- Choose the Factor model you are looking at, then enter your height and inseam in the size check. It compares your measurements with that model's stack and reach for every size. The model pages below show the full geometry.
- Is a Factor size the same on every model?
- No. Size labels are set per model, and the same label can have different stack and reach on another model. Check the model you plan to buy, not the label alone.
- Which Factor models can I check?
- TrainCraft covers 5 Factor models: Factor OSTRO VAM, Factor ALUTO, Factor ELARA, Factor OSTRO Gravel, Factor SARANA.
TrainCraft training
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