A Duro Thornproof inner tube in 28"/29er x 2.125/2.50 Thornproof (ETRTO 57/64-622): a thicker butyl wall built to resist the thorns, glass and wire that flatten a standard tube.

Highlights

  • Size 28"/29er x 2.125/2.50 Thornproof (57/64-622)
  • Schrader (A/V) 48mm
  • 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 28"/29er x 2.125/2.50 Thornproof range (ETRTO 57/64-622). 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 28"/29er x 2.125/2.50 Thornproof (57/64-622)
  • Schrader (A/V) 48mm
  • 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
Size28"/29er x 2.125/2.50 Thornproof
ETRTO57/64-622
ValveSchrader (A/V)
Valve length48mm
MaterialButyl rubber
UseCommuting, kids' bikes, e-bikes
SKU BPW-4693
Model # 4693
Barcode # 4713224182136
Brand Duro

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