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New Darimo IX2 AL Unlimited Makes Ultralight <100g Stem Indestructible, No Weight Limit

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem
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When Darimo machined out its customizable IX2 AL alloy stem last summer, it hit some wildly low weights, yet now a new Unlimited version drops the original’s rider weight limit while barely adding many extra grams. Now suited for anything from road to all-mountain biking, the IX2 AL Unlimited is still a weight-weenie stem and is still available in whatever size you need…

Darimo ultralight IX2AL Unlimited alloy stem

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem, angled
c. Darimo

The original IX2 AL aluminum stem was developed to give pro XC racers more lightweight cockpit fit options – especially an issue with every taller bar positions on 29er cross-country mountain bikes with longer fork travel. It was Darimo’s first move away from lightweight carbon, but has been met with a strongly positive response from riders looking to dial in their position. But not every rider is under 90kg themselves, and a lot of more aggressive riders simply wanted extra stiffness and to not have to worry about stem strength.

So, Darimo went back to the drawing board to engineer a version of the customizable alloy stem with no limit on rider weight or riding type…

What’s actually new?

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem, comparison

The one obvious difference between the original IX2 AL & this new IX2 AL Unlimited is the small bars connecting the upper & lower bands of the steerer tube clamp, providing a stiffer connection to your fork. Then, to make the new stem stronger overall, Darimo mostly just left more material around the steerer and handlebar clamping areas. Each of these stems is CNC-machined out of a solid block of 7075 aluminum in-house by Darimo in Spain, so they just took off a little bit less material, making the clamps a bit thicker.

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem, 99g actual weight

The result is a bit more weight, but still claimed under 100g.

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem, top

That’s still pretty light for a mountain bike stem, and only 18g more than the original ultralight version. But now with rider usage or rider weight limit, Darimo calls the Unlimited “indestructible“. (And if you are light enough and ride a less demanding style, you can still get the lighter stem for the same price.)

Darimo IX2 AL Unlimited – Pricing, options & customization

Darimo IX2AL Unlimited customizable ultralight aluminum alloy mountain bike stem, color & size options

Just like the original, the new 200€ Darimo IX2 AL Unlimited stem comes stock in a super broad 37-size range: -6°, -12°, -17° & -25° angles and lengths from 40-130mm, with titanium bolts. And if that doesn’t solve your fit issues, they make you a custom stem in pretty much any length, angle, or clamp diameter you need for just 240€. Custom also means the option for custom engraving, and Darimo says they’ll specially machine you one to work with your bike’s internal cable routing, as well!

All of the 31.8mm IX2 AL alloy stems are available in natural silver, gloss black, or matte black finishes standard. And they’ll even custom anodize them in another color if you want. The 48mm wide one-piece bar clamp was designed originally for lightweight carbon mountain bike bars, but works with most conventional bend, round drop bars too. A 4-bolt replaceable faceplate version is also in the works.

Darimo.eu

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11 Comments
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Jaap
Jaap
26 days ago

Shame it’s mountain bike specific. Looks good though.

Roger Pedacter
Roger Pedacter
26 days ago
Reply to  Jaap

Didn’t read the article, huh?

“…was designed originally for lightweight carbon mountain bike bars, but works with most conventional bend, round drop bars too.”

kjhdfjh
kjhdfjh
26 days ago
Reply to  Jaap

They’re not MTB specific. The first paragraph says rood to all-mtb

Seraph
Seraph
25 days ago
Reply to  Jaap

What even is “mountain bike specific” though really? I can see not riding a road stem on a mountain bike, but the other way around is perfectly fine.

asdfsadf
asdfsadf
21 days ago
Reply to  Seraph

the wide 2 bolt clamp could make it difficult install road bars. you definitely don’t want to be bending it to snake your bendy bars through.

Robin
Robin
21 days ago
Reply to  asdfsadf

Actually, Darimo has very clear and simple instructions for installing road bars.

Robin
Robin
26 days ago

These are gorgeous stems. I have one coming with a custom frame.

Simon
Simon
26 days ago

beautiful stem – i swapped my “porky” stock stem on my Pivot 429 with a Bike Yoke 50mm stem – which is forged & machined – and with titanium bolts came in at 105 grams

https://www.bikeyoke.de/en/barkeeper.html

Rburnham13
25 days ago

Wren has been making stems that are lighter this for years. And a fraction of the price.
But I will say..this stem is very pretty.

LargeD
LargeD
24 days ago
Reply to  Rburnham13

Wren is forged and these are machined, aesthetically the Darimo is far more interesting and machining takes longer to process than a forged part. Hence the cost (not to mention couuntry of origin). You knew this already and instead couldn’t contain yourself to make a snarky comment. Kind of like “My Honda Civic can get from point A to Point B just like a Ferrari 296 GTB”. But ask yourself which you would prefer to own…

Olly Horne
Olly Horne
25 days ago

A Syntace Liteforce manages to be this light (and enduro rated) while still having a removable faceplate. Not as beautiful, mind!

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