Headset Reducers - Alloy - Black

Customer Reviews (1)
3 / 5| Write your review
£17.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
CNC alloy shim / cups that press into larger size headtubes to allow smaller size forks and headsets to be retro-fitted to frames.

Please Note; Manufacturer Stamping May Vary
Product Reviews (1)
Questions & Answers (3) Q & A
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Product Reviews (1)
Overall Product Rating 3 / 5
They Work
By Jörg Prinzlin
03 May 2017
3 / 5
I recommend this product
ProsThey fit well
Not much to say, really.
The fit well and do the job of reducing the inner diameter of the head tube.
I think they are expensive (£18) for what they are, though ( alloy rings) but there's not that much choice.
Questions & Answers (3)
Can I go from 1 1/4" to 1" using the two size options together?
08 Dec 2020
I have a 1 1/4" steerer tube and would like to reduce all the way to 1" so was thinking of buying two sets of these in the two size options so I would go: 1 1/4" to 1 1/8", then install the other set to go from the adapted 1 1/8" to 1".

I have a bike that is difficult to get a standard threaded headset for because the steerer tube outer size is 33.8mm, and the fork tube is 25.4mm.
We would not recommend doubling up, but on paper it would work.

I have a frame with 1-1/4” bottom head tube diameter
23 Apr 2019
Can I fit this shin to 1-1/8” fork steer to fit with the existing bearing race.
Hi, I'm not sure I understand your question. These reducers fit to the frame not the fork. Thanks
New Fork!
20 Apr 2016
I have a specialised secteur frame and a new fork which has a 1" steerer. Will this made the fork fit the 1 1/8 headset on the frame?

These shims are indeed what you need. They are designed to fit into the frame first then allow you to fit a 1" headset and a 1" fork.