Inner Tube Selection Guide
What is your rim height?
The height of your rim determines the valve length you need. Measure the distance from a spoke to the rim flange to determine the height. To ensure sufficient space for a pump head, make sure the valve protrudes at least 1.5 cm, i.e. is higher than the rim. Is your rim higher than 65 mm? Then you need a valve extender. Please note that many inner tubes with an 80 mm valve cannot use an extender.
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