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Trek Soho S headset replacement

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Trek Soho S headset replacement

Old 04-10-17, 07:12 AM
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BoozyMcliverRot
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Trek Soho S headset replacement

I have a 2009 Trek Soho S with a Slimstak headset. I dont like the height of the upper and lower cups or the height of the spacer that sits on the upper bearing. can this headset be replaced with any other 1 1/8 pressed in cup headset? when i took it to my LBS that sells Trek they told me it was proprietary. but to me it looks like just press in cups. I pulled this image from the web but its the same bike i have.
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Old 04-10-17, 10:19 AM
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Originally Posted by BoozyMcliverRot View Post
when i took it to my LBS that sells Trek they told me it was proprietary.
So you don't trust the Trek dealer?

Looking at the Trek archive, it doesn't give any real info about the headset, 2009 Soho S - Bike Archive - Trek Bicycle

If you don't like the spacers, you could swap their position to above the stem, or get the LBS to cut the steerer down (no going back on that though)
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Old 04-10-17, 10:49 AM
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I think the OP doesn't like the tapered "spacer" between the normal spacers and the headset. I'd take it apart to make sure that part isn't simply a spacer that can be removed...

But to answer the OP, yes, typically you can put a different headset on the bike. You run the risk of changing the stack height on the bottom though which would change bike geometry a bit.
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Old 04-10-17, 11:24 AM
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You need to open the headset up to verify the type.
The CaneCreek headset finder says top is EC34/28.6 and bottom is EC34/30.
https://www.canecreek.com/headset-fit-finder

This is what I would expect from the look of it. Probably this one https://www.canecreek.com/store/headsets/40/40ec34-54
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Old 04-10-17, 06:11 PM
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Originally Posted by Slash5 View Post
You need to open the headset up to verify the type.
The CaneCreek headset finder says top is EC34/28.6 and bottom is EC34/30.
https://www.canecreek.com/headset-fit-finder

This is what I would expect from the look of it. Probably this one https://www.canecreek.com/store/headsets/40/40ec34-54
That's a great tool.

My District S has the same headset. I think the tapered thing is a combination cap and spacer; that's the only proprietary bit. So you can't just take it off, but you could replace it with a different cap or a whole new headset.



I'm going to have to take a closer look tonight.

Last edited by DiabloScott; 04-10-17 at 06:53 PM.
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Old 04-10-17, 08:45 PM
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Thank you for the replys. I don't trust my lbs because they have steared me wrong before. The mechanic I talked to sounded unsure of what he was saying. I just wanted a second opinion.
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Old 04-10-17, 08:47 PM
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Originally Posted by DiabloScott View Post
That's a great tool.

My District S has the same headset. I think the tapered thing is a combination cap and spacer; that's the only proprietary bit. So you can't just take it off, but you could replace it with a different cap or a whole new headset.



I'm going to have to take a closer look tonight.
You are correct. When I removed the other spacers and trimmed the steer tube I noticed the the tapered spacer is notched to cover the bearings and wedge around the steer tube.
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Old 04-11-17, 09:34 AM
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Originally Posted by BoozyMcliverRot View Post
You are correct. When I removed the other spacers and trimmed the steer tube I noticed the the tapered spacer is notched to cover the bearings and wedge around the steer tube.
No photos?
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