A Duro Thornproof inner tube in 27.5" (650b) x 2.125 Thornproof: a thicker butyl wall built to resist the thorns, glass and wire that flatten a standard tube, for commuters, kids' bikes and anyone tired of roadside repairs.

Highlights

  • Size 27.5" (650b) x 2.125 Thornproof (54-584)
  • Extra-thick butyl wall — resists small punctures a standard tube won't
  • Choose your valve type and length
  • Heavier than a standard tube — trade a little weight for fewer flats

Fit and compatibility

Fits tyres in the 27.5" (650b) x 2.125 Thornproof range (ETRTO 54-584). Check the width printed on your tyre sidewall sits inside this range, and pick a valve length long enough to clear your rim depth.

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 27.5" (650b) x 2.125 Thornproof (54-584)
  • Extra-thick butyl wall — resists small punctures a standard tube won't
  • Choose your valve type and length
  • Heavier than a standard tube — trade a little weight for fewer flats
BrandDuro
TypeThornproof inner tube
Size27.5" (650b) x 2.125 Thornproof
ETRTO54-584
MaterialButyl rubber
UseCommuting, kids' bikes, e-bikes — anywhere punctures are a hassle
SKU DUR-TB-54-584-TP
Brand Duro
Shipping Weight 0.2500kg
Shipping Width 0.160m
Shipping Height 0.060m
Shipping Length 0.220m