Chambre à air MICHELIN 29-a4 protek max pr 40 mm

The MICHELIN Protek Max inner tube is the definitive reference against punctures for its integrated automatic repair sealant liquid. - Square section and wavy design. - Self-sealant liquid injected into the inner tube to reduce the risk of puncture. This square section tube has a unique shape that facilitates its mounting and placement of the inner tube on the rim, eliminating any twisting effect. Its wavy design combined with the previous injection of sealant liquid avoids the risk of puncture. Valve: Presta (Fine) 40mm. Material: butyl. Measure: 29x1.9 / 2.3