SKU: CA-31 Category: Inner Tubes

Fat bike inner tube 24x4.0 with right valve

● Fat bike 24x4.0 inner tube — straight valve
● Sold individually
● Check the valve angle before ordering: a straight valve will not replace an angled one
● Brand: Wattiz — SKU CA-31 — EAN 3760351012578
● Same-day dispatch on orders placed before 2pm Paris time

Other fat bike diameters:
CA-30 — 20x4.0, straight valve
CA-39 — 26x4.0, straight valve

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Réappro prévue le 06/11/2026

Size

Fat bike 24x4.0 inner tube: 24 inch outer diameter, 4 inches wide. This is the middle diameter of the three fat bike sizes in the catalogue.

Fat bikes are defined by very wide tyres run at low pressure to absorb rough ground. The tube must therefore be designed for that air volume — a standard bicycle tube will not do.

Straight valve

The valve is perpendicular to the rim, with no bend. This is the simplest and most common fitment: it works whenever nothing obstructs access to the valve.

On rims where access is restricted, an angled valve is required. Check the angle of the original tube before ordering: this is the leading cause of error on this product family.

Fitting

Sold individually. Inflate the tube slightly before inserting it into the tyre to avoid folds, and make sure it is not pinched between the bead and the rim before bringing it up to pressure. The large volume of a fat bike tube makes this check all the more useful.

  • Brand
  • Reference
    CA-31
  • UPC
    40129090
  • EAN13
    3760351012578

  • Type of vehicle
    Bike
    Electric scooter
  • Department
    Inner Tubes
  • Brand and Model
    Fat Bike
  • Category
    Inner Tubes
  • Inner tube size (inches)
    24 Inches
  • Inner tube size
    24x4
  • Valve type
    Right-hand valve

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