Factor O2 VAM Wheelset: What Black Inc 28|33 Dimensions Describe
The Factor O2 VAM wheelset entry names Black Inc 28|33 and separately specifies 700c wheel size. The two numbers in the wheelset name refer to different front and rear depths in the manufacturer’s description. They are not the internal rim width, external width or maximum tyre clearance.
Read the Factor O2 VAM wheelset dimensions by direction
Factor’s feature text gives a 28mm front depth and a 33mm rear depth. It then states 23mm internal width and 28mm external width. Keep the dimension name beside each number: the repeated 28 is especially easy to confuse because it describes the front depth in one place and the external width in another.
For Factor Black Inc 28 33 searches, the vertical separator in the official name is useful to recognise. Factor O2 VAM wheel dimensions should still be copied as labelled measurements rather than inferred from that compact model name. The page’s 700c entry names the wheel size; it does not describe the rim depth.
An intended tyre and a maximum clearance differ
The feature calls these tubeless clinchers optimised for 28mm tyres. That statement describes the manufacturer’s intended pairing. It is not a list of approved tyre models, a guarantee about actual inflated size or a replacement for the frame’s separate measured-clearance entry.
Factor O2 VAM tubeless clinchers also require the actual wheel and tyre instructions for any setup decision. This article does not prescribe pressure, sealant or installation. A wheel model appearing on the general frame page does not establish the contents of every separately offered complete build.
Attribute the component mass to the component
The same feature assigns 1,198g to the 28|33 wheelset. That is a manufacturer-published component claim, not our weighing of a bicycle. Its aerodynamic and stiffness descriptions remain manufacturer claims; there is no independent ride or wind-tunnel comparison in this guide.
Check the package contents when comparing Factor O2 VAM 700c wheels with a particular bicycle offer. The catalogue listing is Factor O2 VAM - SRAM Force w/ Power Meter Bike — Chrome.
The historical O2 VAM Disc photograph has different visible equipment. It illustrates the model family, while the named wheelset dimensions come from the current manufacturer page. Ask for an itemised wheel specification on the actual offer before comparing configurations. Compare this component record with the model context in the Factor range guide, and keep the topic index with the enquiry.
FAQ
Is 33 the internal rim width?
No. Factor describes 33mm as the rear rim depth.
Does optimised for 28mm mean maximum tyre clearance?
No. The intended tyre pairing and frame clearance are separate entries.
Is 1,198g the mass of the complete bicycle?
No. The feature attributes that figure to the wheelset.
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.