Puncture-Proof Tyre Liners for Fat Bikes – 20″ x 4.0 (2x Pack)

Positioning: Insert the tyre liner between the tyre and the inner tube. You can even insert them with the tyre slightly inflated for easier handling. What Are Tyre Liners and How Do They Work?. Made from materials such as Kevlar, nylon, or rubber, they act as a barrier against sharp objects that could otherwise puncture the inner tube.

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