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Btwin 20" x1.7-2.2" Schrader Inner Tube

Sale price: $3.99 Regular price:

20" Schrader inner tube (large valve) for 20-inch tires.

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Size: Select a size
Sale price: $3.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8311089

Product Videos

Product Features

A photo of the Btwin 20" x1.7-2.2" Schrader Inner Tube in use

Btwin 20" x1.7-2.2" Schrader Inner Tube | 20" wheels for children's or folding bikes with 1.70 to 2.20 cross-section tires.

20" Schrader inner tube (large valve) for 20-inch tires.


20", 1.7 to 2.2 cross section tires ETRTO 44/57 - 406


Optimized composition to ensure your inner tube has a good seal.

Product Customer Reviews

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1956 Reviews
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Btwin 20
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Bike inner tube

Handy in case of flat tyre

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Did not work.

I had a puncture while riding my bike and the tyre went flat. After going to a petrol station and filling it with air the product sealed the tube for two days, until tyre went flat again.

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Good product with a video with clear instruction to change the tyre.

Mr Austin Walker

An excellent product!

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Useful to keep a couple in stock

Quick and easy to change a tyre essential stock to keep the kids mobile

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Excellent value for inner tubes

Inner tubes for £3 you can't beat this price anywhere. I bought 2 just in case the tyres pop so hopefully they work.

A good quality tube at very reasonable price

Seems to be made from good thick rubber. Time will tell how good these tubes are in the long run for puncture resistance and general wear and tear

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Good job

Did what it said

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So far so good

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....

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Good quality at low cost

Bought a pair for my fold up bike and sons BOX. These are superior to the cheap innertubes sold by other shops.

Poor quality

I think maybe on this occasion it would have been better to have paid for a better quality tube

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Dear Sir,
I'm sorry to read that you have had a puncture.
Peter Lazarus UK Market Manager DECATHLON


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Good quality

Good quality cycle tube

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Additional Product Information


Main fabric

  • 10% Brass
  • 90% Rubber - Isobutylene isoprene rubber - butyl

How to choose an inner tube

Check the information indicated on the sidewall of the tire (diameter and width). For example, 20 x 2.10 means your tire is 20 inches in diameter and 2.10 inches wide. On the tire sidewall, you will also find the dimensions in mm in ETRTO international units. For example, 50-406 means a tire that is 50 mm wide and has an inner diameter of 406 mm (approx. 20 x 2.00).

Removing an inner tube

Remove the old inner tube using B'Twin tire levers

Checks to carry out before installing an inner tube

Check the condition of your tire and replace it if necessary. Make sure no objects are lodged in the tire. Check the condition of your tire 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.

Mounting the inner tube

Watch our video before you start. Pre-inflate the inner tube slightly to avoid pinching. Insert the valve, making sure you are using the correct valve for your rim. Put the inner tube entirely inside the tire so that it fits inside the rim. Take care not to pinch the inner tube when fitting.

Mounting the tire

Start mounting the tire at the valve. Finish mounting the tire at the valve to avoid pinching the inner tube. Never mount your tire with a screwdriver or a tire lever, as you risk pinching and puncturing the inner tube.

Inflating the tire

Inflate your tire carefully, to the pressure recommended by the manufacturer (visible on the tire sidewall in PSI or bars, 1 bar = 14.51 PSI). Regularly check that your tire is in the correct position as you inflate it.

Tip from the pros

To prevent any puncture from pinching and to achieve the best performance, we recommend checking and, if necessary, pumping up your front tire before each ride.


5.2 oz

Complementary products

You'll need a tire lever (reference 8047839) to change your inner tube. If you want to repair a punctured inner tube, you can use repair patches (reference 1779640) or self-adhesive patches (reference 8380935)



Product testing

To guarantee optimal quality, 100% of our inner tubes are inflated for a period of 8 hours.

Storage instructions

Carry your inner tubes in a container to protect them from getting punctured (B'Twin carry case, original packaging, etc.).

Care instructions

To find out the size of your wheels, check the information printed on the tire wall. Always carry a spare inner tube and a pump.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
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Size Guide Visual