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Extralite stems? Super light, but can stiff claim be true?(11 posts)

Extralite stems? Super light, but can stiff claim be true?Tahoe Gator
Jul 3, 2003 5:09 AM
Extralite aluminum stems are somewhere in the 100 g range, yet they claim to be pretty stiff. How can that be? Take a 200 gram Thomsen and take away half the metal and still be reasonably stiff and reliable? Aluminum is aluminum, after all.
re: Extralite stems? Super light, but can stiff claim be true?Rusty Coggs
Jul 3, 2003 5:17 AM
superlight and reliable....Now you are mucking about on the dark side.
re: Extralite stems? Super light, but can stiff claim be true?268generation
Jul 4, 2003 8:40 PM
Great Stem, popular among mtb people.

They just have really strict torque spec.
not aluminum....C-40
Jul 3, 2003 5:50 AM
Stems lighter than 125 grams will be made from magnesium or carbon fiber, not aluminum.

One of the lightest Al stems is the Ritchey WCS. Seems to be quite stiff and reliable. It's my current favorite.
Ditto..... I wouldn't trust anything lighter than a WCSMR_GRUMPY
Jul 3, 2003 6:59 AM
I've read that the ITM magnesium stem can't be flipped because it's too much stress on it.
Sure - why not?Ridearound
Jul 3, 2003 7:02 AM
The're not gonna bend, just snap.
Don't believe me? Then look at this ...Tahoe Gator
Jul 3, 2003 7:05 AM
yes, 104 grams with aluminum


Jul 3, 2003 7:25 AM
If your stem were to break on a downhill, the resulting crash would probably f#$k you up like no ones' business. The extra weight savings would not be worth the risk to me.
Jul 3, 2003 8:06 AM
There are plenty of Al stems in the 130-150 gram range that have 2-3 years of proven reliability.

And to put 30 grams in perspective: my mounted computer probably weighs more than 30 grams. I doubt I could ever notice 30 grams more or less on my bike.

But I sure wouldn't want to ride a 105 gram stem that I always wonder in the back of my mind when and where it will fail on me.

And it doesn't help matters that most superlight stems cost between $100-250. A Ritchey WCS, ITM Millenium or 3T Zepp are all less than $100.
Totally agree ... just find it interesting ...Tahoe Gator
Jul 3, 2003 8:49 AM
i agree. my original question is simply how they can afford to have half the aluminum of a Thomsen or the like. either everyone else way overbuilds stems or, like many of you suggested, dentists and doctors can make out if it breaks
re: Extralite stems? Super light, but can stiff claim be true?kai-ming
Jul 3, 2003 5:24 PM
You need 200g Thomson for moutain bike, to me it seems overkill for road bike. Serious road racers use 120g-140g stems, i.e. ITM, Ritchey, 3T, etc.