20 to 29" x 1.95 to 2.50" linear air chamber

The linear inner tube is the ideal solution for quickly repairing a flat tire on a bike where wheel removal is complicated.
It is particularly well suited for electric bikes with hub motors, as well as bikes equipped with roller brakes or internal gear hubs.

Thanks to its linear (straight) design, unlike traditional closed inner tubes, it allows you to replace the tube without completely removing the wheel. Simply unhook one side of the tire, insert the linear inner tube, and overlap the ends to form a circular tube that inflates perfectly inside the tire.

Technical Specifications

✅ Compatibility: Road bikes, tires 700x23 to 30C
✅ Valve: Presta 60 mm
✅ Weight: Only 38 grams (light and efficient)
✅ Easy installation: Insert directly into the tire without pre-inflating
✅ Main advantage: Quick replacement without wheel removal

Installation Tips

• Do not inflate the inner tube before installation

• Mount the tube flat directly inside the tire

• Ensure the ends overlap properly before inflating