With a knack for evolving alongside the bike industry, KCNC delivers their latest: Universal Tubeless Valves. Each one is constructed with precision of 7075 Aluminum. They feature expertly machined threads and individually molded sealing grommets. Designed to create a firm seal with most common rim bed profiles, they boast versatility and style. Included is the valve, tightening ring, valve cap, o-ring, and base. The nut and cap both feature knurling to give you a good grip while tightening.
Material 7075 Aluminum
Weight 38mm - 9.5g, 65mm - 12.5g
Included in the box: Valve, O-ring, Tightening ring, Base, Valve cap
Ordering a second set to replace my e13 valve stems
I was skeptical at first when ordering these because I thought the sharp pointy valve caps looked strange but I really wanted gold valve stems.
When they arrived I was very surprised to see that each stem comes with a myriad of different shaped rubber inserts to help these fit any rim.
Theres's a tiny machined black piece that slides over the stem and sits at the bottom, this piece fits perfectly into the rubber part you cut out. In addition, the base of the stem has a nice step machined around it so that the rubber part locks into place, its a real positive feel. The retaining nut has a nice fat o-ring in it which helps seat against the outside of your rim and the knurling helps tighten it down nice and tight.
Lastly the pointy valve cap, they are actually machined aluminum and screw on perfectly, unlike a lot of those cheap plastic caps. I thought they would look weird but they ended up looking very good. I am pleased with them.
Another note, my crank brother clik portable pump fits on these valve stems perfectly and it doesn't fit on my e13 valve stems, so that's a huge plus.
I never did a "tubeless conversion" OK, I am a luddite. But I got these and tried them. What I think is very nice is the come with several rubber inserts for the rim. Easy to set up and I followed the video from Stan's and now I am tubeless. So far, so good! These stems seem very well machined and came with well made caps. Removable valve core. I like the colors and chose green for mine. Presta adapter for air compressor worked like any other valve and no problems with seating the tire or pressure. They have held air.
These are the worst valve stems I have ever used I didn't even put air in the tire and they end broke in half.. In the past I have used the E-thirteen valve stem with no issues but I wanted green stems to match my bike big mistake.... Don't buy these if it happened to me in the house it would really suck if your on a ride...
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