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Btwin, 650cm x 28/42" Presta Valve Inner Tube

Sale price: $3.00 Regular price: $4.99

650 x 28 / 42 Presta inner tubes with 650 diameter and a cross-section ranging from 28 to 42 mm.

Color: Select a color
Size: Select a size
Sale price: $3.00 Regular price: $4.99

Free shipping over $35

Final Sale: No returns or exchanges

See our return rules

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8549087

Product Features

A photo of the Btwin, 650cm x 28/42" Presta Valve Inner Tube in use

Btwin, 650cm x 28/42" Presta Valve Inner Tube | kids' bike wheels, 12" in diameter with a 1.70 to 2.20 cross-section. Bent valve for easy inflating.

650 x 28 / 42 Presta inner tubes with 650 diameter and a cross-section ranging from 28 to 42 mm.


650 x 28 to 650 x 42 tires and 650 wheels with cross-sections of 28 to 42.


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

Product Customer Reviews

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Btwin, 650cm x 28/42
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Service with a smile!

Excellent in store service as usual.

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Adaptable y aceptable

Cámara al uso de calidad media.

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Hola ciclista,

Desde el equipo de ciclismo agradecemos la confianza que depositas en Decathlon para realizar la compra de la cámara de aire 650. Así como, la valoración positiva que haces de nuestro producto en la web.


El comentario y la puntuación que has expuesto nos anima para seguir trabajando y sacar los mejores productos.


Nuestro equipo trabaja para satisfacer a nuestros usuarios ciclistas, buscando la mejor calidad y prestaciones con los precios más ajustados posible.


Esperamos volver a verte por nuestras tiendas y por la página web.


Reciba un cordial saludo, que tengas un buen día.



Javier - Experto producto ciclismo Decathlon

Va bien


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Hola Carolina.

Muchas gracias por la reseña. Tal cómo indicas es la cámara indicada para las cubiertas de 27,5 pulgadas y de un rango de anchura de 1,10 a 1,65 pulgadas, cómo la específica de rodillo (8402874) que tenemos en nuestro catálogo.

Javier Iglesias - Experto ciclismo Decathlon España

Basicas pero cumplen su función.

Usadas en mi bicicleta de carretera, siempre una de repuesto. No se pinchan con facilidad.

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Cumpme lo esperado

Todo bien

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Me cambiaton la camara de la rueda

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Rapport qualité prix top

Facile à poser

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Produit valable

Produit valable, fait le job.

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Bon produit

Excellent rapport qualité/prix Je vous le recommande.

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Parfait pour une adaptation…

Parfait pour une adaptation sur pneus slick pour un Rockrider 520.

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Nouvelle expérience

Nouvelle expérience

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Bon produit

Bon produit

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petit prix, efficace

petit prix, efficace

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Additional Product Information



  • 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, 26 x 2.20 means your tire is 26 inches in diameter and 2.20 inches wide. On the tire sidewall, you will also find the dimensions in mm in ETRTO international units. For example, 50-559 means a tire that is 50 mm wide and has an inner diameter of 559 mm (approx. 26 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.


5.8 oz



Warning - california prop 65

Learn more

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.).

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.

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual