700x18-25 Inner Tubes x2 - Presta 48mm

    Designed for 700 mm diameter road wheels with an 18 to 25 mm cross section tyre.

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    SKU: S100 (1620934)
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    Size Guide

    Delivery in 6 to 7 days

    € 3.24
    Characteristics Designed for 700 mm diameter road wheels with an 18 to 25 mm cross section tyre.
    Product Benefits
    1. Compatibility
      700 mm tyre and wheel, 18 to 25 mm cross section, with Presta valve
    2. Waterproof
      Very good quality 48mm Presta/French valve that maintains pressure
    Product feature
    1. How to choose your inner tube
      Write down all visible information from the tyre sidewall (diameter and width). For example, 700 x 23 means your tyre is 700 mm in diameter and 23 mm wide. You will also find the dimensions in mm in the international ETRTO measurements. For example: 23-622 means the tyre is 23 mm wide with an inner diameter of 700 mm (approx. 700 x 23 mm)
    2. Removing an inner tube
      Remove the old inner tube using B'Twin tyre levers (ref 8047839)
    3. What to check before installing your new inner tube
      Check the condition of your tyre and replace it if necessary. Make sure no objects are lodged in the tyre. Check the condition of the 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.
    4. Fitting your 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 rims. Put the inner tube entirely inside the tyre so that it fits inside the rim. Take care not to pinch the inner tube when fitting.
    5. Mounting the tyre
      Start by mounting the tyre from the opposite side of the valve Finish at the top of the valve to avoid pinching Never use a screwdriver or tyre lever to mount the tyre or you could pinch the inner tube, puncturing it.
    6. Inflating the tyre
      Inflate your tyre carefully, to the pressure recommended by the manufacturer (check the sidewall, written in PSI or in bars: 1 bar = 14.51 PSI) Regularly check that the tyre is in the right position while inflating.
    7. Tip from the pros
      To avoid punctures from pinching and for best tyre performance, we recommend that you check your tyres and inflate them to the suggested pressure before every ride.
    Product testing
    1. Composition
      Membrane : 100.0% Rubber - Synthetic
    2. Approved by
      Our inner tubes are tested continually by our professional teams, such as the U-19 PRO Racing Team and the MTB Racing Team.
    3. Storage advice
      Carry your inner tubes in a container to protect them from getting punctured (tool drum, original packaging, bag).
    4. Cleaning advice
      To get your wheel size, check the information on the tyre wall. Always carry a spare inner tube and a pump.
    5. Product restrictions
      Take care not to pinch the inner tube when fitting it.
    6. Product catchline
      First price road inner tube with Presta valve. Two at a time is better value
    7. Lab tested
      To guarantee optimal quality, 100% of our inner tubes are inflated for a period of 8 hours
    Product reviews
    3.4 / 5
    15 reviews
    15 users recommend this product
    Write a review
    • Really good

      Talmeez (United Kingdom)
      Used for 2 to 8 weeks
      Its really good. And batter quality, usually buy online but this time I bought it from decathlon, its grrat

      Thanks Decathlon
      Perfect size
    • Great value

      Nathan (United Kingdom)
      Used for More than 1 year
      I use these on my every day commute to work bike and they are on decent quality especially for the price.
      No screw down element on the valve sleeves
    • 1,000 miles completed without incident.

      Lawrence (United Kingdom)
      Used for 7 to 12 months
      Fitted a new pair of these in March 2016 under a new set of puncture resistant tyres from a very well known tyre manufacturer. I decided I would road test the combination to see how the tubes performed long term. I expected some compromise at this price point and I took a risk as the tubes are sized 19-23mm but the tyres are 25mm. The finish of the valve stem on lower priced tubes can be poor, dirty and with rough edges. These valves look and feel top quality. Eight months and over 1,000 miles later the tyres have not been removed once. There is very little loss of pressure between rides. I have had no punctures and no problems. I have replaced my spare tubes with these and recommend them to my cycling buddies. One caveat here is that, to date, I have only experienced two examples of this tube. The road test continues.
      Quality valve stem; Holds pressure well.
      Sizing does not include 25mm tyre width.
    • B'TWIN 700x18-25 Inner Tubes x2 - Presta 48mm

      Daniel (United Kingdom)
      Used for 7 to 12 months
      did the job
    • Inner tubes

      Albert (United Kingdom)
      Used for 2 to 8 weeks
      First ones I ordered one was faulty contacted yourselves and got new innertubs sent out straight away had no problems since would recommend and will by again
      Very good for the price
      A part from one that was faulty no complaints
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