Available Sizes - Deluxe Tubes Available Sizes - Defiant Tubes
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Shop Quality Tubes

Made for bike shops, and discerning cyclists, CIRC butyl tubes are manufactured according to strict ISO9001: 2008, ISO14000 manufacturing control standards

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Sealant Friendly

All CIRC tubes, both Presta and Schraeder, have removable cores, making them among the easiest to use with sealant products

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Lead Free

CIRC tubes displaying the Eco symbol are manufactured with valve stems that are lead free to comply with requirements for juvenile tubes

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1% of Profits to People for Bikes

Are you for bikes? It’s a simple question with world changing potential. PeopleForBikes is a leading voice for uniting millions of individuals, thousands of businesses and hundreds of communities to make riding better for everyone


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Available at Your Local Bike Shop distributed exclusively by BTI

Deluxe Tube Sizes

16"

  • 1.75 - 2.125” Schrader/Eco

20"

  • 1.75 - 2.125” Schrader/Eco
  • 2.125 - 2.40” Schrader/Eco

24"

  • 1.75 - 2.125” Schrader/Eco

26"

  • 1.75 - 2.125” Schrader
  • 1.75 - 2.125” Presta 33mm
  • 1.75 - 2.125” Presta 48mm
  • 2.125 - 2.40” Presta 33mm

27.5"(650b")

  • 1.95 - 2.125” Presta 33mm
  • 2.125 - 2.40” Presta 33mm

29"

  • 1.95 - 2.125” Presta 33mm
  • 2.125 - 2.40” Presta 33mm

700c

  • 19-23c (1”) Presta 33mm
  • 19-23c (1”) Presta 48mm
  • 19-23c (1”) Presta 60mm
  • 23-32c (1-1/8”) Presta 33mm
  • 23-32c (1-1/8”) Presta 48mm
  • 23-32c (1-1/8”) Presta 60mm
  • 23-32c (1-1/8”) Presta 80mm
  • 28-38c (1-1/4”) Schrader 33mm
  • 28-38c (1-1/4”) Presta 33mm
  • 28-38c (1-1/4”) Presta 48mm
  • 35-43c (1-3/8”) Schrader 33mm

Defiant (Thorn Resistant) Tube Sizes

Defend yourself against goatheads, thorns and other sharp objects. Beefy 4mm (tire side) thickness rubber tube resists punctures.

16"

  • 1.75 - 2.125” Schrader/Eco

20"

  • 1.75 - 2.125” Schrader/Eco

24"

  • 1.75 - 2.125” Schrader/Eco

26"

  • 1.75 - 2.125” Schrader