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Genetic Quill Stem Adaptor - 1 Inch Quill to 1 1/8 Inch Threadless Adaptor

Customer Reviews (4)
4.8 / 5| Write your review
£11.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Product Reviews (4)
Questions & Answers (2) Q & A
Total length = 200mm, 50mm at the top is for fitting 28.6mm ahead stem, of the remaining length 130mm can go inside your head-tube, the min insert mark is 80mm from the bottom.

Weight - 266g

Note: This is for a 1" (25.4mm) fork with a 22.2mm internal diameter.
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Product Reviews (4)
Overall Product Rating 4.8 / 5
Top Quality Piece Of Kit.
24 Mar 2017
5 / 5
I recommend this product
ProsTop quality
Far superior to others I have used. Nice flanged seat for stem mount. No need for spacers, & a polished finish.
Well thought out & a lovely bit of kit.
Beautifully Made Example Of A Quill Adaptor
12 Jun 2012
5 / 5
ProsWell finished, strong and long
Used to adapt oversize 31.8 stem and bars to threaded 1inch headset. Looks and works well though had to refit and tighten after a few months to cure squeaks.
One Of A Kind Quill
12 Feb 2011
5 / 5
I recommend this product
ProsClassical look, no spacers needed, space for putting a bell on
This is the perfect quill because I can use an ahead stem AND I can take the bell on it... No stupid spacers... just a clean elegant shape. There is nohing similar on the market!! Highly recommended
Genetic Quill Stem Adapter- 1
20 Oct 2010
4 / 5
I recommend this product
Exactly what I was looking for with a reasonable quill length to raise the bars to suit my height which is 6' 4".
Questions & Answers (2)
or as means of using both a 1 inch quill stem or 1-1~8 stem?
10 Feb 2018
Basically doing a build of a track bike and would wish to know traditionally the bike has always had a quill threaded headset,...could i then use a fork that has a 1inch steel threaded steerer with this adaptor together with a stem that is 1-1~8 clamp?
Hi there,

This stem is designed to fit a 1inch threaded fork with a 1.1/8th stem.

Can You Please Confirm This One Is An Alloy Part?
08 Jul 2015
It would be crucial, that I get an aluminium part. Based on the picture this tube has quite thick walls, so I suppose it is made of an aluminium alloy. (As opposed to a simple steel tube.)

Can you please confirm?

This quill stem adapter is indeed made from and alloy and not made from steel.