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Challenge 41.5 mm Valve Extender Black$17.99
The Challenge threaded inline valve extenders add length so that your valves will protrude thru deeper dish rims allowing you to attach a pump. They are compatible with inner tubes and tubular tires that include removable valve core Presta valves. They also include rubber gaskets for an air-tight fit.
The kit includes two black anodized aluminum extenders and a plastic tool.,The Challenge threaded inline valve extenders add length so that your valves will protrude thru