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Touring & CX 700c Inner Tube Presta Valve (also 27/28") - From £2



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700x28-42c Presta 42mm Valve (also 27/28")

  • This size of inner tube is used on cyclo cross (CX), touring, fixie/fixed wheel bike and some wider road bike tyres.
  • Presta valve type (AKA High Pressure Valve or French Valve).
  • Threaded valve stem with security ring prevents rattling on the rim and makes pump attachment easier.
  • 42mm length valve suitable for most standard depth rims up to 30mm.
  • Reinforced dual thickness tube/valve interface to prevent punctures.
  • Light weight butyl rubber construction.
  • Weighs 140g.

These innertubes are compatible with the following ETRTO tire sizes:

Metric Sizes

700 x 28 = ETRTO 28-622
700 x 30 = ETRTO 30-622
700 x 32 = ETRTO 32-622
700 x 34 = ETRTO 34-622
700 x 35 = ETRTO 35-622
700 x 37 = ETRTO 37-622
700 x 38 = ETRTO 38-622
700 x 40 = ETRTO 40-622
700 x 42 = ETRTO 42-622

700 x 38B = ETRTO 40-635

Imperial Sizes

28 x 1 1/8" = ETRTO 28-622
28 x 1.2" = ETRTO 30-622
28 x 1 1/4" = ETRTO 32-622
28 x 1 3/8" = ETRTO 35-622
28 x 1.5" = ETRTO 38-622
28 x 1.6" = ETRTO 42-622

28 x 1 5/8 x 1 1/4 = ETRTO 32-622
28 x 1 5/8 x 1 3/8 = ETRTO 35-622


28 x 1 1/2" = ETRTO 40-635

27 x  1 1/4" = ETRTO 32-630

26 x 1 1/4€? x 1 3/4€? = ETRTO 32-622 (should match exactly)

As you can see this tube will fit both the ETRTO rim sizes 622, 630 and 635mm. You may know that rim and tyre sizes must match each other exactly, but due to the flexibility of an inner tube they can often fit more than one rim size.

Click to find out more about ETRTO tyre sizing and whether this is the right tube for your bike. 

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