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Challenge produces the only seamless 'one-piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker or bump like those found on other tubes. Latex tubes are lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats. The tube also includes a removable core Presta valve making them compatible with both inline and external valve extenders. The only Seamless ‘one-piece’ latex inner tube on the market Seamless & smooth, no bumps at the valve, No “out of round, unbalanced” wheel Improves rolling resistance and comfort Strong and extremely elastic, thus very reliable Improves resistance to punctures Is lighter weight than standard butyl and some superlight butyl tubes Has a two-piece removable valve core for valve extender use Sizes: for Road/wider Road 23-30mm and for wider Road/Adventure 29-38mm By far the cheapest way of improving the performance and overall feel of your bike! 48mm stem length
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