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<p>Gravel riding is incredibly fun, but flat tires, not so much. This tube is the answer for 650B wheels. Slide it in a jersey pocket, or handlebar bag and roll with confidence.</p><ul><li>For 650B road bike tires with 37 to 44mm width</li><li>Compatible with MEC Provincial Trail bike</li><li>Made with high-quality butyl rubber</li><li>42mm presta valve</li></ul>

Continental 650B x 37-44 Tour 26 Tube (42mm Presta Valve)

Bicycle tubes are valve-specific. Presta – narrow, with a built-in valve cap that you loosen when pumping up the tire and tighten again afterwards. Schrader – wide, with a pressure valve similar to those on a car tire. 

Members get this item for only $35.99 when they use the code MEM2005. Hurry while supplies last.

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Continental 650B x 37-44 Tour 26 Tube (42mm Presta Valve)

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