A Duro Thornproof inner tube in 26" x 1-3/8 Thornproof (ETRTO 37-590): a thicker butyl wall built to resist the thorns, glass and wire that flatten a standard tube.

Highlights

  • Size 26" x 1-3/8 Thornproof (37-590)
  • Schrader (A/V) 32mm
  • Extra-thick butyl wall — resists small punctures a standard tube won't
  • Heavier than a standard tube — trade a little weight for fewer flats

Fit and compatibility

Fits tyres in the 26" x 1-3/8 Thornproof range (ETRTO 37-590). Check your tyre's width sits inside this range.

Duro tubes are covered against defects in materials and workmanship. Punctures, pinch flats from incorrect fitting, over- or under-inflation and valve damage from a poorly fitted pump head 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.

  • Size 26" x 1-3/8 Thornproof (37-590)
  • Schrader (A/V) 32mm
  • Extra-thick butyl wall — resists small punctures a standard tube won't
  • Heavier than a standard tube — trade a little weight for fewer flats
BrandDuro
TypeInner tube
Size26" x 1-3/8 Thornproof
ETRTO37-590
ValveSchrader (A/V)
Valve length32mm
MaterialButyl rubber
UseCommuting, kids' bikes, e-bikes
SKU BPW-4679
Model # 4679
Barcode # 4710944868210
Brand Duro

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