Promax 1 1/8" Ahead Adjustable Stem with QR -10/+90 Deg - 25.4mm Clamp - Black - 110mm

Customer Reviews (1)
4 / 5| Write your review
£25.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
- Quick adjusting of angle and handlebar clamp without tools
- Alloy
- Matt black
- Adjustable from -10 to +90 degrees
- Complete with QR lever
- Clamps on bar diameters of 25.4 mm
- For 1 1/8" steerer tubes (28.6 mm)
- Length 110 mm
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Product Reviews (1)
Questions & Answers (7) Q & A
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Product Reviews (1)
Overall Product Rating 4 / 5
Promax No-Tools Adjustable Stem Functions Well
By Teun
01 Jul 2012
4 / 5
I recommend this product
ConsQuite heavy.
ProsEasy to mount and adjust.
It is not a particularly light item, but it fits and functions very well. I bought this item, because it is one of the few adjustable stems that can be adjusted without tools. I have chosen this model for its wide range: 100 degrees. I am happy with it.
Questions & Answers (7)
This stem is 110mm in length - is that the measurement when it is straightened out completely?
01 Sep 2023
Hello & thank you for your enquiry.
Length or reach is the horizontal measurement of your bike stem. It is measured from the center of your steer tube to the center of your handlebar clamp along the central axis of your stem.
Hope this assists.
Kind regards, pc 4/9/23.
Can this be used with normal drop bars?
29 Aug 2021
As long as your bars have a clamp diameter of 25.4mm then this stem will be fine.
Kind Regards. JP 01/09/21
Do you have any adjustable stem like this which fit a 31.8 handlebar clamp?
15 Apr 2020
Hi, this is the only type we have. Thanks
What kind of bars does it
04 Jun 2019
Because it does not fully open i'm guessing that not all bars will fit, will it fit mid rise bars?
Hi, this stem will not work with riser bars, the bends are to sharp. Thanks
Promax adjustable stem
31 Jul 2018
Hi, the Promax adjustable stem SJS part no. 25833
Do you have this part with quill or has it to be purchased separately ?
The one I’m replacing is the Promax adjustable quill stem on a Volt ebike!
We do not have this as a quill stem unfortunately.

When Qr Is Released, What Can Be Adjusted?
29 Apr 2016
Does the same 1 QR release both Handle bar adjustment as well as the stem rising angle adjustment?

You are correct the one quick release adjusts both the handlebar angle and the stem rising angle.

Instructions For Promax Adjustable 1 1/8 Stem With Qr.
17 Jul 2014
Your link to the instructions for installing/operating the Promax adjustable 1 1/8" stem (exact name below) is broken. Do you have the PDF, or can you check the link?

Promax 1 1/8" Ahead Adjustable Stem with QR 10 / +90 Deg 25.4mm Clamp 110mm


The link is to a page that no longer exists unfortunately, the only instructions we have are what is printed on the rear of the packaging. If you require another copy of this, get in touch with us directly and we'll be able to sort your out with a copy.