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April 25, 2019, 8:29 a.m. -  cyclotoine

Ha. After I read about these on here the other week I immediately started searching lightweight tubes and discovered Tublito. I agree if they could make a 150g version, plus 40-gram tube, less 80 grams for sealant,  less 4g (?) for the valve stem and you're looking at a weight penalty of 106g? That would be acceptable. Do you think the extremely low pressure was also a factor in climbing rolling resistance?

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