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Lost compression ri...
 

Lost compression ring from headset

Posts: 261
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Topic starter
 
[#13535212]

Sad times in my garage right now, I was replacing my stem and (don't ask how) have lost the plastic compression ring from my upper headset so now predictably the fork knocks etc.

 

After hours of searching the garage to no avail I'll have to just buy a new one, but I haven't a clue what to look for.

 

The bearing has

"TANGE SEIKI 4T5-5 BEARING

41.8 / 30.2 / 45° SUJ-2"

stamped on it.

 

What would be a suitable product to buy?

 

Many Thanks


 
Posted : 20/04/2026 12:02 pm
Posts: 3378
Full Member
 

https://www.lordgunbicycles.co.uk/fsa-1-18-headset-compression-ring

that's a 45° compression ring. should work OK. 

 


 
Posted : 20/04/2026 12:17 pm
Posts: 211
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Posted by: whyterider93

What would be a suitable product to buy?

A new headset!

 

Seriously, though... I had this a couple of year ago with a friend who had tried to adjust theirs and failed. I bought 3 different ones, which were all slightly wrong... before finding hers in the frame. 

 

Hopefully someone else will have a foolproof method of finding the right one cos my experience doesn't help much - unless I can locate my new "spares" somewhere in the shed...

 


 
Posted : 20/04/2026 12:21 pm
Posts: 261
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Topic starter
 

Thanks, Ordered


 
Posted : 20/04/2026 12:47 pm
Posts: 211
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If it doesn't work, give me a shout and you can try these...


 
Posted : 20/04/2026 8:48 pm
Posts: 211
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  17767144568588958706148464253030.jpg Once more with feeling...


 
Posted : 20/04/2026 8:49 pm
Posts: 261
Free Member
Topic starter
 

Unfortunately the one I ordered was too deep in the wider section, and so was too pronounced when fitted into the headset bearing. It was also rather tight and the steerer tube would not go through, although I imagine with some lubing that it would slide in just fine


 
Posted : 21/04/2026 3:49 pm
Posts: 211
Full Member
 

If you wanna DM me yor address, I'll happily chuck those 3 in an envelope. If you want, you can send back any that don't work...

 


 
Posted : 22/04/2026 1:22 pm