Thomson X4 Stems

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X4

The new Thomson X4 for Mountain and Road allow you to realize the benefits of stiffer forks and stiffer 31.8 bars. They offer precise steering tracking and more control while riding all wrapped up in a beautiful design. The Thomson X4 is stronger and 30 grams lighter than the Thomson Elite 25.4 mountain stem. It features a traditional steerer clamp that is shaped to save weight and to be knee friendly. Light enough for Cross Country or Road is only part of the story. The X4 is absolutely t...

User Reviews (2)

Showing 1-2 of 2  
ebenisek   Recreational Rider [Jun 03, 2010]
Strength:

looks good, light weight and easily adjustable.

Weakness:

broke while riding.

Have a Thomson stem on both my road bike and mountain bike. The stem looks good, is light weight and is easily adjustable. The bad news is I suffered catastrophic failure of my road stem while climbing out of the saddle. The stem (Elite X4) was two years old and snapped completely off from where it attaches to the fork tube (not the face plate). There are four arms that wrap around the fork tube and are bolted around the back. The failure occurred at the thinnest section of each arm (basically the mid point) causing the stem and handle bars to come free from the bike (I can send pictures for those that are interested). I'm 6'2" 165lbs so I don't consider myself hefty. In any event, I've only heard great things about Thomson's products so I'm giving them the benefit of the doubt that this was fluke event. One last thing - just prior to the failure was loud stem creaking which will alert me in the future of a possible problem.

Similar Products Used: Cinelli
OVERALL
RATING
3
VALUE
RATING
3
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Vitix2   Recreational Rider [Apr 16, 2010]

The Thomson X4 is designed for mountain bike use, but I have seen a few roadies with them and I have used them on two road bikes myself. Great quality, incredible stiffness, and IMHO, it outshines all of the other high dollar stems that I've tried. In fact, since moving away from quill stems, I have never had issues with any stem in terms of stiffness and quality. Yet, when I mounted the Thomson X$ on my road bike I could instantly tell I was dealing with a different animal. It made my Deda Newton and various FSA's feel inferior. Again, I had no problem with them when they were mounted, but the X4 is better quality, stiffer.

That said, the X@ is Thomson's road fork but it only comes with a +/-17 degree rise. That is too extreme for me. Being either 17 degrees higher or lower is not anything that I'm interested in. It seems that if you are riding a bike that fits, 17 degrees is too drastic. Anyway, the X$ is 10 degrees and more within what I consider to be a workable rise. The only challenge that I have is that I'm not crazy about its' look. The finish is great, but the shape (beefy look) is over the top. So, I love the performance and quality of it, but could do with something a little more evelte looking. It is not heavy, but it just looks like it belongs more on a mountain bike. It is relatively fat at the base and thins toward the bar clamp. Again works exceptionally well, but looks like it belongs on a cross bike or a city bike, not a sexy road bike.

The look thing may be personal, but it is something that the more image conscious riders out there should consider. Still, I have not swapped back. It's just too sweet to kick to the curb due to its' muscular look.

OVERALL
RATING
5
VALUE
RATING
4
Showing 1-2 of 2  
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