CST Thornproof tubes have a thick butyl wall built to stop the thorns, glass and wire that flatten standard tubes — the tube for commuters, school bikes and e-bikes that just need to keep rolling. All Schrader valve, 48 mm.

Highlights

  • Extra-thick butyl wall resists thorns and small punctures
  • Schrader (car-type) 48 mm valve on every size
  • Ideal for commuters, kids' bikes and e-bikes
  • Heavier than a standard tube — trade a little weight for a lot fewer flats

Options

  • 20 x 2.2-2.5
  • 24 x 2.2/2.5
  • 27.5 x 1.9/2.125
  • 27.5 x 2.2/2.4
  • 700 x 35/43

Fit and compatibility

Pick the size whose width range includes your tyre. Schrader valves need an 8 mm rim hole.

Pick your option from the dropdown; price and stock update to the exact variant.

CST backs its tyres and tubes against defects in materials and workmanship, assessed while serviceable original tread remains. Road hazards (cuts, snags, punctures), plug repairs, under- or over-inflation, overloading and incorrect mounting or rim fit aren't covered.

For warranty support, return the item to Tune Cycles with your proof of purchase and we'll manage the claim with the distributor for you. This cover is in addition to your rights under the Australian Consumer Law.

  • Extra-thick butyl wall resists thorns and small punctures
  • Schrader (car-type) 48 mm valve on every size
  • Ideal for commuters, kids' bikes and e-bikes
  • Heavier than a standard tube — trade a little weight for a lot fewer flats
  • Options: 20 x 2.2-2.5, 24 x 2.2/2.5, 27.5 x 1.9/2.125, 27.5 x 2.2/2.4, 700 x 35/43
BrandCST
ModelThornproof Tube
TypeThornproof inner tube
ValveSchrader
Valve length48 mm
MaterialButyl rubber

Options

OptionSize
20 x 2.2-2.520 x 2.2-2.5
24 x 2.2/2.524 x 2.2/2.5
27.5 x 1.9/2.12527.5 x 1.9/2.125
27.5 x 2.2/2.427.5 x 2.2/2.4
700 x 35/43700 x 35/43
SKU KWT-CST-TUBE-TP
Brand CST

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