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Julio C.
Reviewed in the United States on January 15, 2025
As title says, is excellent for latex tubes because its valves are short for 50mm rims o more.
Roark C. Herron
Reviewed in the United States on August 28, 2024
Extended my existing bike stems as they were too short. Pretty easy to install. Pumping air in is a little more challenging but they work fine.
dgb1023
Reviewed in the United States on August 2, 2024
I got two lengths of these as I have different depth of wheels. They have worked perfectly and in regard to the tool for removing the valve, it worked great for me. I had other tools but thought I'd try it out.
C
Reviewed in the United States on November 2, 2024
I ended up getting these because I didn't take into account how much deeper my new rims were, and once I got the tires on, I really did not want to take them off and do it all again.These are fine, however: the plastic wrench tool they come with really sucks. I think some other brands come with aluminum ones.That said, as I get flats and have to take out the tube to fix them anyway, I'm likely going to just buy new tubes that have longer valve stems and be done with it.
Jon Siegrist
Reviewed in the United States on August 3, 2023
Got some new deep section wheels for my TT bike and wanted to install latex tubes for the lower rolling resistance martial gains. Quickly realized the valve stems on the latex tubes were way too short. These fixed that problem up quick.Very easy to install. You simply remove the value core from the presta valve, and screw these into place. Then pop the core back in and you're good to go.These are well made, lightweight and a necessity if you're going to run deep section wheels.
LarryC
Reviewed in the United States on July 21, 2023
I bought some TPU inner tubes for my Roval Rapide CLX carbon wheels and the rear value stem sticks out only about 1 cm - barely enough for my floor pump but not enough for my CO2 fitting. I bought the 20mm length of these extenders. The extenders themselves are very nice. They look great and are finished nicely. Once installed, the tubes have held pressure for 4 days now. The problem is that the valve core removal tool is virtually worthless and I bought this brand because I couldn't find my old core tool. This tool is made of plastic with a poor (loose) fit on the core. Unless your core is just barely in the tube, this tool will just spin around the core. I had to use pliers to get my cores out and to reasonably tighten the extenders and to set the core in the new extender.I do recommend these extenders but be prepared to find an alternative solution to removing your cores and tightening the extenders to your old valve stems.
Cy Birr
Reviewed in the United States on October 19, 2023
You don't need to know the reason why but on the black, black, blackness of my TT bike there had to be a spot, a just a hint, of blue, against a valve cap. On Roval CLX 64 Rapide rims 30mm pokes up just enough on standard Vittoria latex tube stems. 20mm might have saved 0.01 Watts but who's counting?Installation was trouble free but their included 3D printed wrench adaptor was useless. Get a purpose built Park tool. Note, the included anodized metal valve caps are a different shade than the stem extension. Tossed aside. Had planned to use black ones that fit better anyways. Style matters.These are good for purpose.
Joshua Weitzman
Reviewed in the United States on October 28, 2022
Nice looking extenders that don't do the job. Installation was easy. However, when I tried to use the tube with the extender to fix a flat, I first noticed that airflow was very limited and the tube was hardly pumping up and then the extender snapped off, breaking above the threads. Returned them and will stick to buying long stemmed tubes.
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