Inner tubes

Binnenband 700 x 25/32C Presta 42 mm

Inner tubes

Binnenband 700 x 25/32C Presta 42 mm

This inner tube is size 700 x 25/32C with a 42 mm Presta valve. It is a mid-length valve for rims of average depth.

What you get

  • Size 700 x 25/32C
  • 42 mm Presta valve
  • For road and gravel bikes

Why the right inner tube?

An inner tube has three properties that matter: size, valve and material. The size is printed on your tyre, for example 700x28 or 29 x 2.4. A tube covers a range, such as 700x28 to 32c, and your tyre has to sit inside it. Too narrow and the tube stretches too much, too wide and it folds.

The valve is Presta (slim, with a small nut) or Schrader (wide, like a car tyre). Road rims usually take Presta. The length must stick out of the rim far enough: 40 mm for shallow rims, 60 mm or more for deep aero rims, or you cannot get a pump head on.

Butyl is the standard material: tough, affordable and easy to patch. TPU tubes are much lighter (often 30 to 50 g against 90 to 130 g for butyl), pack smaller and roll slightly easier, but they are less forgiving of poor fitting and can only be patched with a special patch, or not at all.

A good spare in your saddle bag is often the easiest way to get home calmly. A small TPU spare weighs next to nothing.

Butyl or TPU

The two common inner tube materials.

MaterialWeight (approx.)RepairToughnessSuits
Butyl90 to 130 gStandard patchHighDaily use, training
TPU30 to 50 gSpecial patch or not at allSensitive to fittingRacing, spare, bikepacking

Valve length: 40 mm for shallow rims, 60 mm or more for deep rims.

Choose it if

  • Your rim is of average depth and you want a mid-length valve
  • You run tyres between 25 and 32 mm wide
  • You ride clinchers and want a good spare in your bag.
  • You want to ride light and are considering TPU.

Choose something else if

  • You have a deep aero rim and need a longer valve
  • You ride tubeless: you do not need a tube, except as an emergency spare.
  • You have tubular wheels: a tube will not fit.

How to change an inner tube

  1. Remove the wheel

    Open the brake or quick release, take the wheel out of the frame and let all the air out of the tyre.

  2. Release the tyre

    Work one side of the tyre off the rim by hand or with tyre levers. Pull the tube out and check the tyre for the cause of the puncture.

  3. Check the tyre

    Carefully run your fingers along the inside and remove thorns or glass. Check the rim tape too.

  4. Fit the new tube

    Inflate the new tube slightly, pass the valve through the hole and tuck it into the tyre. Work the tyre back on without pinching the tube.

  5. Inflate and refit

    Inflate to the pressure you want, check the tyre is seated evenly and refit the wheel.

Good to know

  • Measure rim depth to see whether 42 mm is long enough
  • Check the width printed on your current tyre
  • Check the valve length before you buy, especially with deep rims.
  • A Presta valve has a small nut that you loosen before inflating.
  • TPU is sensitive to sharp edges and needs careful fitting.
  • A tube slowly loses air through its wall over time. Store it flat and clean.

Also available as

The same product line with a different size or version, compared on price per unit.

VersionFrom
42 mm valve You are viewing this one€10.95
60 mm valve€11.95

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  3. Continental Race 28 binnenband 700 x 25-32C Presta 60 mm2 shops · Amazon.nl, Amazon.com.befrom €20.75
  4. Continental Conti Tube MTB 28/29 binnenband1 shop · Amazon.com.be€4.49
  5. Schwalbe SV19 binnenband 27,5-29 inch Presta 40 mm2 shops · Amazon.nl, Amazon.com.befrom €5.49
  6. Binnenband 700 x 25/32C Presta 60 mm1 shop · bol€11.95
Binnenband 700 x 25/32C Presta 42 mm | compare prices