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Brompton G Line inner tube 20 inch

Brompton G Line inner tube 20 inch with presta / racing type valve

Brompton Q part code: Q103112

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Presta G Line


Brompton G Line inner tube 20 inch

This 20 inch inner tube is supplied as shown - with no box - as supplied to us from Brompton

This inner tube is made by forBrompton by Schwalbe (it is actually the Schwalbe SV7)

Brompton G Line 20 inch inner tube specification:

  • Inner tube weight: 145g (according to our Park Tool scales and with a sample size of 1)
  • Rim nut: Yes
  • Valve cap: Clear
  • Removeable valve core: Yes
  • Valve type: Presta / racing type - 6mm diameter

Brompton G Line 20 inch inner tube sizing:


  • This inner tube fits ETRTO tyre size as shown below:

    50-406 20 x 2.00 inches Brompton Continental Contact Urban size
    54-406 20 x 2.10 inches Brompton Schwalbe G-One size

Brompton G Line 20 inch inner tube installation:

Note: 

We suggest against using tyre levers when installing inner tubes and tyres to your Brompton 

Although the tyre fitting may seem tricky, it's just technique to do it tool free - see the below videos for help

(Using tyre levers can often result in damage to the inner tube - pinching it when installing, or to the tyre bead, or both)

The below videos may be helpful in seeing the technique for installing your tyre and inner tube:

Installing a tyre with no tyre levers:


Brompton G Line front wheel removal and installation:


Coming soon .... G Line rear wheel removal and installation


(very soon!)


Introduced by Brompton with the G Line in October 2024

Brompton 2020 Q part code: Q103112
Brompton part number: 9068562


Sorry - only available for shipping to UK / European Union / European Economic Area countries - if you want the exactly same tube from (non Brompton version) it is the Schwalbe SV7 20 inch inner tube