Topeak Presta Valve Extender 60mm Black Provides Access For Deep Section Rims

le meilleur prolongateur de valve mais un peu cher.;

Item looks great well made etc. but too thick to fit through the hole in the wheel. Valve extender is 6.5mm in diameter.;

I bought a 60mm tube for my roadbikd and didn't check the depth for my wheel which is 80mm. I bought two of these instead of the one I needed because I was worried they would be fragile and they are. They do work very well and if you read the little instructions paper it comes with it will make sense. Basically it has a plunger that screws onto the presta valve core so you don't need to remove the core. However the width of the hole on the wheel for my valve stem was a little tight when I put it through so I pulled on it to get it back out and the valve came out with the internal plunger completely separating from the outer shell of the extender and ripping the rubberized seal threads out of the extender. Basically it completely fell apart. But this is why I bought two. Second time went fine but just avoid these all together and get a long valve stem tube from the start and forget screwing around with these things.;

awesome tool to have. I used to worry about getting flat on the road when riding with my 808 I can easily pop in regular length presta valve tube which can easily buy from any bike shop along the road not to mention they are way cheaper than 65mm and up which is recommended for deep dish wheels.;

Does the job for valve extenders. Once you figure out how they work they are fine;