Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Sale product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

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

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

Skip to reviews
316 Reviews
Write a Review 

Btwin, 650cm x 28/42
Filtered by reviews Loading reviews…
Service with a smile!

Excellent in store service as usual.

icon-circle-checkmark verified purchase
Va bien


icon-circle-checkmark verified purchase

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.

icon-circle-checkmark verified purchase
Cumpme lo esperado

Todo bien

icon-circle-checkmark verified purchase

Me cambiaton la camara de la rueda

icon-circle-checkmark verified purchase
Rapport qualité prix top

Facile à poser

icon-circle-checkmark verified purchase
Produit valable

Produit valable, fait le job.

icon-circle-checkmark verified purchase
Bon produit

Excellent rapport qualité/prix Je vous le recommande.

icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase

à associer avec les pneus 27.5" pour équiper un Rockrider 520 en pneu route !

icon-circle-checkmark verified purchase
Fait le boulot

Fait le boulot

icon-circle-checkmark verified purchase
Produit correct


icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase
vieux vélo maison trouve…

vieux vélo maison trouve quand même le bon produit

icon-circle-checkmark verified purchase
Bon produit. Excellente disponibilité en…

Bon produit. Excellente disponibilité en magasin. Valve un peu trop longue / inesthétique. Prix qui a malheureusement augmenté...

icon-circle-checkmark verified purchase
Skip to reviews

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.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual