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Your cart is empty.Granite valve stem extenders allow you to extend the length of your Presta valve stems, making it easier to reach and inflate your bike tires.
Jerry Mouse
Reviewed in France on March 13, 2025
Pratique mais après montage l'obus serrées au maximum fuyait au niveau du filetage.Impossible de remédier à cela !Défaut de fabrication sûrement , retour accepté par Amazon.Merci
David T Ross
Reviewed in the United Kingdom on July 1, 2024
Bought this pack from Amazon, delivery with Prime was next day, what was needed for the TT bike, installed and blew tyres up. The following morning, the rear was flat. Removed and checked for leaks, found that the extender was leaking, applied PTFE tape, and again the following morning flat, removed once again and fitted PTFE tape around the valve core itself. Still flat. Completely useless, new set of Vittoria's now on order to replace.
gordon m.
Reviewed in the United Kingdom on June 17, 2024
Work very well good value for your money.
Mirek
Reviewed in the United Kingdom on April 18, 2024
Good stuff. Fits well presta valves.
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