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Thorn Alloy 1 1/8" Ahead Stem +40 Deg - 25.4mm Clamp - Satin Black - 90mm

£24.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Satin black stem with white Thorn logo on the faceplate.
25.4mm bar clamp.
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Questions & Answers (5) Q & A
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Questions & Answers (5)
Length again?
30 Mar 2020
Hi, sorry, still unclear. I'd like to know if the 90mm is measured along the length of the stem (at its 40 degree angle), or if it is the distance forward (flat to the ground, in what might be called the x axis). As the stem is very angled, if 90mm long, it will only reach forward about 70mm. If it reaches 90mm forward, at 40 degrees, it needs to be about 125 long. Does that make sense?
The measurement follows the line of the stem, all stems are measured this way.

Thanks - 04/03/20
What is the definition of length?
11 May 2019
Please can you tell me how length is defined for all these stems? I can think of at least 4 possibilities.
The length is measured from the centre of the steerer tube to the centre of the handlebar.

Thanks - 13/05/19
What is the weight of this stem?
26 Feb 2019
Many thanks

Thank you for your enquiry, this stem weighs 152g. We hope this helps.

Regards. 27/02/19
Can I Use This With Deda Quill Stem Adapter?
30 May 2017

Thank you.
Hi you will need Genetic Quill Stem Adaptor #22444 to use this handlebar stem with 1 inch forks
What Is Bar Diameter Of This Stem?
22 Apr 2014
SJS Part No 40DEG90SBB
Please confirm bar diameter, is it 25.4 mm?

Yes it is 25.4mm, all of the stems in this category use the standard 25.4mm bar clamp.