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(pre-tax value). Some restrictions apply:

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Road Tubes

Specialized Airlock Presta Valve Tube

Specialized has long offered their Airlock tubes for cyclists who ride clincher tires, can't stand dealing with punctures and just prefer the simplicity of a self-healing tube. Airlock Tubes come prepared with a homogenous sealant already installed. The non-toxic formula is more like a gel than most sealants, and is developed not to separate or dry out. It is highly effective for small punctures and works continuously to prevent slow leaks.


  • Presta valve tube that comes with pre-installed sealant for ease of use and protection
  • Airlock inner tube sealant for the best chance of reducing punctures
  • Works continuously to prevent slow leaks
  • Homogenous design prevents puddles with no need to shake
  • Non-toxic, non-separating formula
  • Will not dry out like the many other sealants
  • Valve length: 40mm, 48mm
  • Sizes: 700x20-28, 700x28-38, 700x32-50mm
  • Weight: 200 grams (700x28-38)