An inner tube needs only the wheel size (ISO bead seat); its width range is printed on the box. Valve length is a matter of rim depth, which we do not model — check it against your rim.
- How do I know whether a part in this category fits my bike?
- Every part page lists the standards it requires and its computed verdict on each bike in the fleet, with its confidence and sources. An "unknown" verdict means we do not have the measurement on file — not that it fits.