€ 3.00

Designed for 20-inch tyres and wheels (junior bikes).

More details
SKU: S67 (176449)
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Available online

Delivery in 6 to 7 days

Our e-commerce is suspended for a transition period. We expect to be back soon!
Product benefits
  1. Compatibility
    20" tyres and wheels with a cross-section ranging from 1.7 to 2.2
  2. Waterproof
    High-quality valve that retains air pressure well.
  • Weight
    154 g.
  • Material
  • Sold
Product feature
  1. How to choose an inner tube
    Check the information indicated on the sidewall of the tyre (diameter and width). For example, 26 x 2.20 means a tyre with a 26-inch diameter and 2.2 inches wide. On the tyre sidewall you will also find the dimensions in mm in ETRTO international units. For example, 50-559 means a tyre that is 50 mm wide and has an inner diameter of 559 mm (approx. 26 x 2.00).
  2. Removing an inner tube
    Remove the used inner tube using B'Twin tyre levers (item code 8047839).
  3. Checks to carry out before installing an inner tube
    Check the condition of your tyre and replace it if necessary. Make sure no objects are lodged in the tyre. Check the condition of your tyre rim strip. A rim strip that is even slightly bent can cause punctures. Check that your rim does not have any other issues that could damage your inner tube.
  4. Installing the inner tube
    Pre-inflate the inner tube slightly to avoid pinching. Insert the valve, making sure you are using the correct valve for your rims. Put the inner tube entirely inside the tyre so that it fits inside the rim. Take care not to pinch the inner tube when fitting.
  5. Mounting the tyre
    Start by mounting the tyre onto the wheel on the opposite side to the valve. Finish mounting the tyre at the valve to avoid pinching the inner tube. Never mount your tyre using a screwdriver or a tyre lever as you risk pinching and puncturing the inner tube.
  6. Inflating the tyre
    Inflate your tyre carefully to the pressure recommended by the manufacturer (visible on the sidewall of the tyre in PSI or bars; 1 bars = 14.51 PSI). Regularly check that your tyre is in the correct position as you inflate it.
  7. Tip from the pros
    To avoid punctures from pinching and for best tyre performance, we recommend that you check your tyres and inflate them to the suggested pressure before every ride.
Product testing
  1. Composition
    Material: isobutylene. Weight: 154 g.
  2. Storage advice
    Transport your inner tubes in a container that protects them from perforations (b'twin carry case, original packaging, etc.).
  3. Cleaning advice
    To find out the size of your wheels, check the inscriptions on the side of the tyre. Always have a spare inner tube and a pump.
  4. Product restrictions
    Take care not to pinch the inner tube when fitting.
  5. Product catchline
    Schrader inner tube (large valve) for 20-inch tyres and wheels.
Product reviews
4.2 / 5
5 reviews
5 users recommend this product
Write a review
  • Quality Product

    Venugopal (India)
    Used for 2 to 8 weeks
    Quality product fits perfectly for Btwin bike
  • So far so good

    firman (United Kingdom)
    Used for 2 to 8 weeks
    Upon fitting the inner tube to the tyre with some air in it, it seems the tube is longer than the tyre. It kind of folds a bit (BTWIN Foldable bike) after fitting.Who knows if it's still folder once fully inflated.

    So far it still holds the tyre and works....
  • Quality or installation seems to be the problem.

    Tabrez (India)
    Used for 1 week or less
    After getting the tube replaced, we found out a puncture again the next morning.
    Response of the brand
    Thank you for taking the time to give us your feedback. Inner tubes and tires are wearable components and it is possible for punctures to happen due to external factors and internal problems like pinching and spoke piercing. Please get the wheel diagnosed again for any such signs. Feel free to write back if you have any questions. 

    Deepak Babu E-sport manager DECATHLON
  • Good quality at low cost

    David (United Kingdom)
    Used for 2 to 8 weeks
    Bought a pair for my fold up bike and sons BOX. These are superior to the cheap innertubes sold by other shops.
    Low cost. Holds air well.
  • Poor quality

    Andre (United Kingdom)
    Used for 2 to 8 weeks
    I think maybe on this occasion it would have been better to have paid for a better quality tube
    Very poor quality meaning prone to punctured
    Response of the brand
    Dear Sir,
    I'm sorry to read that you have had a puncture.
    Peter Lazarus UK Market Manager DECATHLON