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Btwin 29" x 1.7-2.2" 48mm Presta Inner Tube

Sale price: $4.99 Regular price:

Presta valve inner tube for 29" tires with a 1.70 to 2.20 cross-section.

Color: Select a color
Size: Select a size
Sale price: $4.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8311104

Product Videos

Product Features

A photo of the Btwin 29" x 1.7-2.2" 48mm Presta Inner Tube in use

Btwin 29" x 1.7-2.2" 48mm Presta Inner Tube | This inner tube is suitable for 29" diameter tires of 1.70 to 2.20 section with a 48 mm Presta valve.

Presta valve inner tube for 29" tires with a 1.70 to 2.20 cross-section.


29-inch diameter tires, 1.70 to 2.20 cross-section. ETRTO 44/57 - 622


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

Questions & Answers

Product Customer Reviews

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Btwin 29
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Great inner tube

I really like this tube since not many stores have this size.

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Very good product

Durable, and works perfectly.

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Best buy price/quality

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Amazing Tube

Amazing tube at this price

Good product

The product is of good quality, I have not used it yet, it is for an emergency

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fine valve

Very cool. It is only found in Decathlon San Pedro. There is more variety of cameras than in Decathlon Cumbres. 🤷🏻

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Meets my expectations.

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Good but little heavy

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Inner Tube - 29 X 1.7 /2.2 - 48Mm - Presta Valve Fit

Bought it on sale to try it out, waiting as a spare.

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To put in your emergency bag.

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Good value for money

Good value for money. RAS

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Very good price

need more incentive programs like this to stimulate demand

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No Flatties

Great product. Comparable price and quality to most popular product.

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excellent buy

Everything very good and fast

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Additional Product Information


Membrane/coating: 90.0% Rubber - Isobutylene Isoprene Rubber - Butyl, 10.0% Brass

How to choose your inner tube

Check all the information indicated on the sidewall of the tire (diameter and width). For example, 29x1.90 means that the tire is 29 inches in diameter and 1.90 inches wide.On the tire sidewall, you will also find the dimensions in mm in ETRTO international units.For example, 50-622 means that the tire is 50 mm wide with a 622 mm internal diameter (approx. 29x2.00).

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 rim strip and that it is positioned correctly.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 avoid punctures from pinching and for best tire performance, we recommend that you check your tires and inflate them to the suggested pressure before every ride.


8.8 oz

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 that protects them from perforations (B'Twin carry case, original packaging, etc.).



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