Inner Tubes
The correct tube depends on tyre dimensions and the rim's valve interface. Compare width ranges and valve options here. Check valve type and length alongside tyre size; assess a suitable pump adapter separately if required.
Inner Tubes collection
CST 27.5x1.90/2.125 Fluid Inner Tube 48mm Thick Valve
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Choose size range and valve together
Tube diameter must match the tyre, and its width range must include tyre width. Narrow or wide valves must suit the rim hole. Deeper rims require attention to valve length for pump access. A broad size range does not mean compatibility with every wheel diameter. Recording a spare tube's size range helps find the right replacement later.
- Record tyre sidewall dimensions.
- Compare valve type with rim hole and pump attachment.
- Examine tube material, size range and any adapter requirement.
Does every rim need a long valve?
No. Required length depends on rim depth and pump-head access. Choose dimensions accordingly.
Why does tube width range matter?
Tyre width must fall within that range. Compare sidewall diameter and width together instead of wheel diameter alone.
