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Inner Tube 650x18/25 - Presta

Sale price: $3.99 Regular price:
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Sale price: $3.99 Regular price:

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Model: 8549101

Product Features

A photo of the Inner Tube 650x18/25 - Presta in use

Inner Tube 650x18/25 - Presta is designed for

650x18 to 650x25 inner tube for 650 wheels and tires.


650x18 to 650x25 tires. ETRTO 18/25 - 571


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

Product Customer Reviews

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33 Reviews
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Inner Tube 650x18/25 - Presta,base color
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good price

does the job easily, time will tell on durability but every confidence so bought 2 more

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Cheap and reliable

A great product that's cheap and reliable. Had no problems fitting it and getting it to inflate. Just need to show my daughter how to change a inner tube now so she can do it next time.

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Buen producto

Buen producto calidad precio

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Bon produit…

Bon produit

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vraiment rageant de trouver…

vraiment rageant de trouver des chambres à air de 650... et pas les pneus (en x23 par ex.) qui vont avec !!!

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InshaaAllah nokel…

InshaaAllah nokel

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Pièce de remplacement de…

Pièce de remplacement de très bonne qualité.

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produit conforme aux attentes…

produit conforme aux attentes

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bon produit…

bon produit

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Je crève beaucoup moins…

Je crève beaucoup moins depuis que j'utilise cette marque. Avant j'utilisais un produit made in china moins chère mais moins bon

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Chambre a air reçu…

Chambre a air reçu coupe dans sa boite

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Bonjour Monsieur,

Je regrette le souci rencontré qui est indépendant de notre volonté.

Je vous propose de procéder à un échange dans votre magasin habituel.

Bonne journée




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Je parcours plus de…

Je parcours plus de 12000 kms par an et j'utilise toujours ces chambres à air.

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fait le taf…

fait le taf

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C bon

C bon

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Additional Product Information



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

How to choose your inner tube

Check the information indicated on the sidewall of the tire (diameter and width). For example, 27.5 x 1.90 means a tire with a 27.5-inch diameter that is 1.90 inches wide. On the tire sidewall, you will also find the dimensions in mm in ETRTO international units. For example, 50-584 means your tire is 50 mm wide with an inner diameter of 584 mm (approx. 27.5 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 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.


3.8 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 to protect them from getting punctured (B'Twin carry case, original packaging, etc.).

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Size Guide Visual