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Madone 5.5 Headset

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Old 12-09-22, 12:22 PM
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sastma
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Madone 5.5 Headset

I need a complete headset for a Madone 5.5 2011. Any suggestions on which one? Are they pretty standard? Looking through Amazon and there all sorts of specs, widths, degrees...

Thanks for the help!
T
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Old 12-09-22, 12:53 PM
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Originally Posted by sastma
I need a complete headset for a Madone 5.5 2011. Any suggestions on which one? Are they pretty standard? Looking through Amazon and there all sorts of specs, widths, degrees...

Thanks for the help!
T
Jeff Bezos is not a bike shop, I would take it down to your local bike shop and they can get you what you need. Otherwise measure at home. Just make sure to get your S.H.I.S. straight: https://www.parktool.com/en-us/blog/...ication-system. If nothing else you can ask Trek, just have your serial number ready.

Cane Creek used to have a great tool for it but they discontinued it I am sure Internet Archive has it.
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Old 12-11-22, 06:56 PM
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Originally Posted by sastma
I need a complete headset for a Madone 5.5 2011. Any suggestions on which one? Are they pretty standard?
They are not standard. Measure twice, order once. Even better, bring the old bearings or frame to a shop for measuring. I don't remember whether the bevel on the lower bearing is 36 or 45 degrees.
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Old 12-18-22, 11:04 PM
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Originally Posted by veganbikes
... Just make sure to get your S.H.I.S. straight: https://www.parktool.com/en-us/blog/...ication-system. ....
I had no idea of all the various headset types out there. Thanks for the link!
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