XLC Thorn Resistant Boxed Tube - 29" x 1.9/2.3", PRESTA Review

Customer Ratings:

After the first 25 mile ride, the tube went flat. It was find for the entire ride, but the next morning it was flat. The shaft of the stem is not threaded like other presta valves (It is quite long though) I have been riding and working on bikes for 30 years and I made sure the tubes were in strait, and the valve stem was perpendicular to the rim, and I filled them to 65psi. But, right at the base of the valve stem it broke. I can't even patch it now. I hope the other one I purchased doesn't have the same problem. The tube is quite thick, and there are no other holes in the tube. Maybe I just got a bad tube, as the one in the other tire is still holding up. I will definitely make sure that valve stems are threaded on future presta tube purchases. That way I can cinch them down to the rim.

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This tube is very thorn resistive. Where I ride there are a lot of goathead thornes that can eat up a standard tube. Been riding on this for a year now and still going.