Reviewed by Brian Mullin aka Gram and MTBR.com Pastajet
http://www.gramslightbikes.com/

I have been testing the new Moots Open Trail titanium mountain bike stem since late winter, and it is the best stem I have ever used, period. That is a very bold statement, but I have been through my share of stems, and they all have a certain feel and a set of characteristics, and the Open Trail stands at the forefront of stemdomhood (ok, I made the word up).

That titanium stem is unobtainium, man!

The Open Trail was Moots first foray into creating a full fledged stem for mountain biking with a 31.8 clamp for oversized handlebars, and it is the burly mountain relative of the Moots Open Road stem. The mountain bike precursor to the Open Trail was their Ti Beam stem, which has only a 25.4 clamp and a 2 bolt faceplate.

The Open Trail is made with bi-ovalized titanium tubing, a newly designed 4 bolt aluminum faceplate, a titanium dual binder and comes stock in 90,100,110,120×6, 130×10 sizes. Moots use 3/2.5 Pi-Tech CWSR (Cold Worked and Stress Relieved ) seamless titanium tubing, which is comprised of 3% aluminum and 2.5% vanadium.

Titanium 101

Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver white color. Titanium can be alloyed with many metals to produce strong lightweight alloys for use in multiple industries, in situations where lightweight strength, corrosion resistance and ability to withstand temperature extremes are required. It was discovered by the English amateur geologist William Gregor in 1791, then independently rediscovered and named by the German chemist Martin Heinrich Klaproth in 1795, whom named it for Titans (Latin - Titanos), the first sons of the earth in Mythology. It is the only element that burns in nitrogen.

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www.pointoneracing.com

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(Sorry for the sniffle, it was windy and a bit cold in Pacifica.)

Review: Point One Split-Second 50mm Stem $119

Point One, a small start up component company out of NorCal, has decided to go straight after, and frankly out do, the top product manufacturer in the stem market, Thomson.

I had never heard of this company until Sea Otter. A friend showed me two stems that he was going to be using that year. FYI - this friend won semi-pro DH 2008. No slouch of a rider, but he is a lighter guy. Can’t quite put the force down on the stem for testing. That’s where I come in. I was especially interested in testing this stem when he told me it was 50gram lighter than a Thomson Elite X4. You had to think for a minute, where did they cut weight? Thomson makes one of the lightest DH stems out there. These guys are lighter, and they are just as strong? Let me try that!

When I got the stem in the mail, held it in my hand, comparing the Thomson Elite X4 in my other hand, I could tell right away the Split-Second was noticeably lighter. On the scale is came out at 137grams w/o top cap bolt. Adding the bolt adds 5.5grams. The Thomson 50mm Elite X4, w/o top cap and bolt 178grams, add a Chris King top cap and it comes out to 188grams. This Split-Second stem is a full 40-50grams lighter. I am well aware that this fact doesn’t rock everyones boat, but for those wanting to make the lightest race bike you can, and especially take some weight off the front end, this is the stem for you. Point One shaved a ton of weight by hollowing out the inside of the stem as much as possible. To make the stem strong enough its design is noticeably tall. Five or so millimeters taller then my Thomson. Which at first irked me, but after a week, I could not have cared less. And bar height, rise, is not effected.

(click on images for bigger versions)

One quickly notices that this stem is a bit different, there is no place for the steerer tube to come through. No top cap? It is all supposed to fit neatly inside the stem. I was a little distraught at first over having to cut my steerer tube shorter. If this turns you away right off the bat, well, Point One isn’t try to sell it to you then. This is race oriented, lightweight, cut your steerer tube! We’re shaving grams off here people! So, the no way to keep your steerer tube length long didn’t really bother me too much after I got everything cut and set up. I did have some question as to how short to cut the steerer tube. It would be nice if Point One put a little marking line on the outside of the stem so one knew what the correct length should be from the top of the last spacer. If it is too long, the stem can’t clamp down and you’ll have a loose headset.

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