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EB17: CarbonAria carbon fiber tubeless valve stems are next level

Written by Tyler Benedict
barbieri carbonaria carbon fiber tubeless valve stems for bicycles
17 Comments
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Yeah, there was still a part of your bike that wasn’t carbon. But Barbieri’s CarbonAria carbon valve stems solves that problem, and knocks precious grams off the rotating mass.

Coming in at a claimed 4g per valve in this 45mm long version, they’re wicked light. They say a shorter 35mm length is on the horizon, too.

barbieri carbonaria carbon fiber tubeless valve stems for bicycles

Our scale backs up their claims, even with the larger of two rubber seals (our “tradeshow” scale has seen some abuse, and it kept waffling between 8g and 9g) coming in on target.

barbieri carbonaria carbon fiber tubeless valve stems for bicycles

Each pair comes with all the bits needed to make it work, including the two different shapes of seals, helping you get the best fit on your bike.

barbieri carbonaria carbon fiber tubeless valve stems for bicycles

We’re bringing a set home with us for test, stay tuned. Retail price is about €19 (probably $20 USD), on par in both price and weight with the alloy ones we used for our latest World’s Funnest Bike project. Except they’re carbon. Which is awesome.

Barbieripnk.it
Tyler Benedict
11,282 articles

Tyler Benedict is the Founder of Bikerumor.com, where he’s been writing about the latest bikes, components, and cycling technology for almost two decades. Prior to that, Tyler launched and built multiple sports nutrition brands and consumer goods companies, mostly as an excuse to travel and ride in new places.

Based in North Carolina, Tyler also loves the Vanlife & family adventure travel and is always on the lookout for the next shiny new part and off-grid adventure.

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17 Comments
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Dave
Dave
7 years ago

This has got to be the ultimate waste of effort and money.

-1
Reply
Shreddingstevo
Shreddingstevo
7 years ago

I got a hernia lifting my old tubeless valve stems off the floor. Man those things are heavy.

-1
Reply
Larry Falk
Larry Falk
7 years ago

I haven’t decided if I like this part with the lock nut being used on threaded carbon. Anyone know if this is a good idea? In this capacity?

0
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Mecanico do paladar
Mecanico do paladar
7 years ago

Been using them for a couple of months. So far so good.

3
Reply
the fred that will buy this
the fred that will buy this
7 years ago

I always dehydrate myself several days before a big race. Gotta save 400 grams

1
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AdamBike99
AdamBike99
7 years ago

Is it Sept 1st or April 1st?

0
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tyler
tyler
7 years ago

same weight as american classic AL. cool story.

-1
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Collin S
Collin S
7 years ago
Reply to  tyler

I’ve sheered off an aluminum stem before. I had an almost flat burbed tire in the middle of snowy wintery ride. Hit the thing with CO2, the CO2 froze the water on the stem to the inflator. When I went to remove the inflator, it was stuck so I had to add a little muscle, and PSSHHH! Stem sheers off and there goes all my air.

3
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Jason Woods
Jason Woods
7 years ago

For the fool with more money than brains.

-1
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Jeb
Jeb
7 years ago

This actually makes sense. As noted above aluminum ones don’t play well with Co2. Same price (read people, jeez) as aluminum, if they are just as durable what’s not to like?

2
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Ripnshread
Ripnshread
7 years ago

Nice application of injection molded plastic. Using the right resin/fiber mix this easily could be strong enough for the application. Threads look coarse and deep. Nice product.

1
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Cryogenii
Cryogenii
7 years ago

Blimey guys, how hard do you do up the lock rings on your valve stems? I don’t think it’s a highly stressed thread so plastic should be fine.

In all seriousness; if you have to chuck a tube in your tubeless set up on the trail you better be able to undo the lock ring with your fingers…

1
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Char
Char
7 years ago

Yeah for real we have seen far stupider “upgrades” for far more $$ (this being unbalanced rotational/sprung weight too). This really doesn’t cost much more than a pair of steel valves in the first place, so as long as the nut is a soft enough material I don’t see why this wouldn’t work.

2
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Kalman Barbieri
Kalman Barbieri
7 years ago

Hi i’m Mr. kalman Barbieri, http://www.barbieripnk.it.
not only the weight, but also you have 2×2 different exchangeable rubber for different rims.
+ 1 spare core + 1 key.
And you have 2 alloy rings with self-locking system.
Sorry for my bad English.
Nice Ride Kalman.

2
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Lance
Lance
3 years ago

I have a couple sets. they are great. and ya, a couple grams, But at the most important part of the bike. I haven’t broken any of them in the year+ they’ve been used (although my daughter did via too much side pressure with a pump – would have broke Al ones too.

2
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John
John
1 year ago

new world records will be set up over category climbs using these for sure.

0
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Fatty Hügi
Fatty Hügi
2 months ago
Reply to  John

I just got mine, but I’m into tuning my bike with light naked carbon products. Plus I like black. The ones I got are the new ones that will work with cush core and have a sleeker more glove friendly nut and they are lighter at 6 grams in 45mm for the both, the naked stem is just a gram each: phwoo. All the weight is in the unchangable metal valves, I’m waiting for Barbieri to carbon those out and KO another gram or 2! Great product at a excellent price!

0
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