#1
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2 bolt threadless stem?
Saw that Thomson is now offering a new “G2” (gravel?) threadless stem…an update of their X2 stem. I have been on the lookout for a 2 bolt threadless stem that would make break down/build up of my Ritchey Breakaway that much easier, but have had little luck finding one. Any other options out there other than this $150+ new offering from Thomson?
Thanks MB |
#2
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I've seen too many handlebars separate from the bike with 2 bolt stems to ever want to use a 2 bolt stem.
Unlike with single bolt stems (in which handlebar encircles the handlebar clamp and is pinched by the bolt) or 4 bolt stems, on a 2 bolt stem the handlebar will detach if one of the bolts breaks. I've seen multiple cases of this happening |
#3
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My 2 bolt Thomson slippped holding the bar, but it was not this new gravel version. I’m all for saving time and always looking for efficiency gains but two bolts on a stem isn’t one of them…a ratchet makes short work of this.
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#4
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I rarely break bike parts, but the original X2 was one of them. I didnt get hurt, but man, it spooked me to hear a faceplate crack while riding.
In spite of me thinking these are beautiful looking stems, I would never ride a two-bolt Thomson again, redesign or not! |
#5
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Pro vibe stem with the puzzle faceplate is two bolt- I’ve used them a bit and never had issues with this design.
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#6
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The only 2 bolt faceplate threadless I've liked was the 3T Forgie (2x M5 faceplate and 1x M6 @ steerer). Granted the aesthetics are a bit dated, but they can be had for cheap.
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#7
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Great suggestions
Think I’ll see if I can snag one of those puzzle type stems
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#8
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I rode a Weyless two-bolt on a MTB for years and never had a problem. I also have Profile Design two-bolt quill stems on a couple road bikes that were fine.
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#9
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I forgot about the puzzle stems. That's a genius recommendation.
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#10
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I have had Thomson stems in the past and I had bar slippage. And with the history of broken stems I would simply look elsewhere. This is a case where 4 is better than 2.
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#11
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I have a 2 bolt older Bontrager that works great and has been problem-free. I have seen a broken 2 bolt Thomson, though the break did not relate to the 2-bolts....
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#12
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Quote:
There is basically no forgiveness on this for me. It's just WAY too dangerous. I got so lucky mine broke on the trainer. So it basically boils down to. - 2 bolt stems are inherently more dangerous than 1 or 4 - Thomson has a history of failures - There is no ultra compelling reason or benefit to using a Thomson stem anyway, they are not ultra light, ultra strong, etc.. in comparison to other companies Who the heck cares if it is 5-10g heavier, make the thing not break. I have had plenty of 2-bolt stems that were beefy and were fine but IIRC all my bikes and my wife's and son's all have 4-bolt stems now, they all came that way. I also still can't believe after all that Thomson went with smaller/more fragile bolts on their 4-bolt stems than 99% of all other stem manufacturers. What was the point? Last edited by benb; 11-07-2024 at 11:33 AM. |
#13
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I've had a Ritchey Comp two-bolt faceplate stem on my mountain bike for decades without a problem. But Tom knows how to design stems...
__________________
http://hubbardpark.blogspot.com/ |
#14
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This is the correct answer
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#15
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Quote:
To the OP, I would consider getting a locking headset spacer and leaving the stem with your bars on your Breakaway. |
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