Factor O2 VAM Size Chart: Read the 52 and 54 Columns Together
The Factor O2 VAM size chart puts 52 and 54 next to each other, but their numbers describe different chassis. The current manufacturer chart records stack 535 and reach 373 for 52, against stack 552 and reach 381 for 54. Read those entries together before treating a familiar size label as a fitting answer.
Compare the Factor O2 VAM size chart by named row
The chart headings run 45, 49, 52, 54, 56, 58 and 61. For Factor O2 VAM stack and reach, copy both the row and column rather than saving an isolated number. The captured chart does not print a unit suffix on those numeric rows, so the figures here remain literal transcriptions. They are not our measurements of an offered frame.
Two other rows explain why adjacent sizes are more than a single longer dimension. BB Drop reads 72 for 52 and 70 for 54, while Head Tube Angle is 72.5 degrees in both columns. Identical angle entries do not make the complete geometry identical. Conversely, a changed drop entry is not a recommendation to choose either chassis.
Separate the new-model comparison from a personal position
Factor says the new O2 VAM stack is 10mm higher and reach is unchanged. That is the manufacturer’s comparison with its previous design, not a statement that the 52 and 54 share one reach. Keep that sentence apart from the chart’s between-size comparison. Factor O2 VAM medium frame geometry is useful as a search description, but the actual columns use numerical labels rather than a universal medium definition.
When comparing Factor O2 VAM adjacent frame sizes, use the listing to identify the candidate package and then ask which manufacturer chart applies. The catalogue listing is Factor O2 VAM - SRAM Force w/ Power Meter Bike — Chrome.
Turn the chart into a checkable enquiry
Send the supplier the intended size, the source chart and the position information being compared. Factor O2 VAM frame measurements do not specify the chosen cockpit or a rider-height range. Confirmation should connect the actual frame to the document before a fitter uses its values. For the wider range behind this geometry comparison, see the Factor introduction; the topic collection keeps the model references together.
FAQ
Does 54 mean the same thing as reach 54?
No. The size label heads a column; its recorded reach is 381.
Do the two sizes share the same head angle?
The captured chart prints 72.5 degrees for both 52 and 54.
Is the higher-stack statement a recommendation to size down?
No. It describes a design comparison and supplies no personal size prescription.
Sources
Manufacturer model specification (https://factorbikes.com/bikes/o2-vam) (read 5 November 2026).
Photograph credits and permissions
Photograph 1
Original title: Factor O2 VAM Disc
Creator: Glory Cycles; creator URI: https://www.flickr.com/photos/glorycycles/
Original source URI: https://www.flickr.com/photos/glorycycles/48745876337/
License / permission: CC BY 2.0 Generic
License / permission URI: https://creativecommons.org/licenses/by/2.0/
Modification notice: Original downloaded JPEG bytes retained without crop, recompression or colour edits. EXIF and XMP retained, including embedded Artist/creator value Picasa and the supplied modification metadata. Earlier source processing is unassessed.
Source disclaimer: Historical source-identified Factor O2 VAM Disc, with externally visible cables and a conventional seatpost. Photograph/upload dates do not establish bicycle production year. Related model history only: not the current v2 external-seatmast design, the linked Chrome SRAM Force package, or proof of current specifications, fit, condition or compatibility. No endorsement or warranty is implied; other rights may apply.