Product Colors and Sizes

  • Sale product
  • Best Seller product
  • Eco-Friendly product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Btwin 27.5 "x 1.9/2.5" Presta Inner Tube 48 mm

Sale price: $3.99 Regular price:

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tires.

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

Free returns

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8320817

Product Features

A photo of the Btwin 27.5 "x 1.9/2.5" Presta Inner Tube 48 mm in use

Btwin 27.5 "x 1.9/2.5" Presta Inner Tube 48 mm is designed for 27.5" wheels and tires with a 48 mm Schrader valve.

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tires.


27.5" tires, with a cross-section from 1.90 to 2.50. ETRTO 47/64 - 584


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

Product Customer Reviews

Skip to reviews
772 Reviews
Write a Review 

Btwin 27.5
Filtered by reviews Loading reviews…
Bike tube

Tube punctured within7 days

icon-circle-checkmark verified purchase
27.5x1.9-2.5 Bike Inner Tube

These are a touch thinner than my usual inner tubes, but for the price, you can't complain. They do the job and you can't quibble with the price.

icon-circle-checkmark verified purchase

Got a flat and needed a new inner tube. Such a great price I bought a couple just to be on the safe side.!

icon-circle-checkmark verified purchase

Cheap but very much not cheerful. Replacing a punctured tube with this, only to find out it's already leaking air. Found the hole and repaired it with a patch and still leaks. In the end I patched up the original tube and gave up on this one. Usually like decathlon stuff but will not buy inner tubes from there again.

I'm sorry to read that the innertube was punctured straight out of the box. This is highly unusual and I am unable to explain why it's the case in this instance.
Peter Lazarus, National Cycling Manager, DECATHLON
Good budget tube

Good budget tube but my local store only has 48 mm valve stems, do they have anything shorter?

icon-circle-checkmark verified purchase
Good Price

Always carried, seldom used but worth having with you. Can't go wrong at the price

Tube - Presta

What can I say about this. Got them on my backpack. Still there, so they don't run away by them self! Not to heavy to carry around. Hope I wont need to use them at all. Not too expensive, so it's fine if I don't use them.

icon-circle-checkmark verified purchase
Value for Money

Quality and VFM together.

icon-circle-checkmark verified purchase
Dear Vikash,
Thank you so much for sharing your wonderful experience with us. These feedbacks really help us and the users to make a choice. We really appreciate you taking out time to review and recommend the product. 

Tube quality is good but valve design is bad

Dear Team, I'm using RR560 and Stock Tube was Kenda for my 27.5"x2.10" wheel. I took additional Presta valve tube for backup and once I used this spare tube, I found Presta Valve is not having any ring to tight it with rim so after installation, it was in loose - movable condition. the only disadvantage of this without tightening ring on valve, when I used mini hand pump, my two inner tubes, till date got damaged as due to multiple stroke while pumping, tube got damaged, where valve was attached. In your product picture, you are displaying valve with that ring but in the packet, it's plain.

Bicycle tube

Very good product

icon-circle-checkmark verified purchase
Hello Andy,

Thank you for the feedback about our product: "27.5x1.9/2.5 Presta Inner Tube 48mm".

We are glad you find it to your expectations too, and certainly that you find it worth the dollars you spent on this item, indeed.

We, in Decathlon, always strive to makes sports available to everyone via our affordable price, and we hope you are amongst those that has benefitted from this business philosophy of ours. Thank you for your review.

We hope to see you soon, when our Stores can be opened again. 
Meantime, stay safe and take care, Andy.

Stay healthy, keep fit & stay happy at home, during this circuit-breaker time!

Sports Advisor
Decathlon Singapore

"Sports for Everyone!"
Добри гуми на приемлива цена с дълъг вентил

Дългият вентил с гайка позволява да ползвате гумите на всякакви шини, дори и най-високопрофилните. Гайката позволява вентила да не се губи в шината когато опитвате да то хванете с помпа. Около 5-10 на сезон от тези гуми ползвам за 10те велосипеда с които водя туристи.


207 gramů, nemá šroubovací tělo ventilku (je zcela hladké, bez matky). Na fotkách zde na webu je však se šroubovacím tělem.

Duše na kolo moje nároky splnila.

Duše o.k

icon-circle-checkmark verified purchase

bis jetzt hält er was er verspricht.

icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase
Skip to reviews

Additional Product Information



  • 100% Rubber - Synthetic

How to choose your inner tube

Check the information indicated on the sidewall of the tire (diameter and width). For example, 27.5 x 2.10 means that the tire is 27.5 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, 50-584 means a tire that is 50 mm wide and has 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.


8.5 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 (tool drum, original packaging…).

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