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Jtek Seat Post Sleeve / Shim for Moulton AM & Older APB - Converts 34.8 mm - 27.2 mm.

Customer Reviews (1)
3 / 5| Write your review
£13.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Note diameter, this does not fit all Moultons, fits older APB and AM, please measure your existing seat post before ordering.
100mm in length.
Product Reviews (1)
Questions & Answers (6) Q & A
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Product Reviews (1)
Overall Product Rating 3 / 5
sort-of works
19 Dec 2019
3 / 5
Constwo shims or a wider seat tube might be better
Prosjust about works
The bike that needs this is a poor design - the shim is so thick that it needs a lot of pressure on the seat pin bolt to make it tighten. So the bolt wears out, and needs two tools to tighten it, and adjusting seat height on a 'unisize' bike frame is difficult.
Questions & Answers (6)
Not quite the correct size - will it do?
19 Sep 2020
I'm restoring my "very" early Moulton APB - one of the first produced. The original seat-post measures 35mm give or take 0.1mm or so. Should I order this one or or would I be safer with the "USE Seatpost Shim 31.6mm/34.9mm"?
Hello- Im afraid we cannot advise with regards to this- this will depend entirely on how accurately you have measured your seat post. In this case- we would suggest consulting a local cycle shop as some in person evaluation will be required to work out what will be the safest option.
Will this work with the 31.8 ?
20 Feb 2018
Hi there,

This shim takes 27.2mm post to 34.8 frame therefore will not work with 31.8mm

Shim for Scott Scale
06 Dec 2017
Hi- I would like to fit a 27.2 seatpost onto a Scott Scale, which is meant for 34.9 mm seatpost.

Would this suit to adapt?

Thank you

We do not currently stock a shim for 27.2-34.9mm, the one you have chosen would be slightly too small and mean the seat clamp would have to over clamp the frame.

29 Jul 2017
Hello, possible to pay any other way than a cash or credit card/ let's say money order or so?
Hi, we only accept payment by credit card, debit card or paypal for online store transactions. Thanks
Below And Before
15 Apr 2017
the length o the shim also would be nice if you mention......!!!!!!!!!!!!!!!!!!!!!! common price to ship to Amsterdam ???


These shims are 100mm in length. For a shipping quote just add all of the items you are looking at into your basket. The website should automatically provide you with a shipping quote. If it doesn’t you may need to sign in and provide a delivery address.

Hi, Only On Size Option For This Item... ? It Is Not A Cosmic Science..
15 Apr 2017
i have a moulton APB 94 would like to go with the Thomson seatpost 31.6 or at least 30.9 mm cause go from 34.8 to 27.2mm looks like ... to thin billyboy..

Unfortunately this is the only shim we are able to get hold of with a 34.8mm external diameter.