Humpert Ahead Stem Raiser - 1 1/8 Inch Steerer to 1 1/8 Inch Stem - Black

Customer Reviews (4)
4.8 / 5| Write your review
£29.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
For use with 1 1/8 Inch ahead steerers to raise the level of the ahead stem.
Raises stem by up to 80mm.

This product is rated to Humpert’s safety level of 4. This means it is suitable for use on hybrid/trekking bikes that have a combined rider and luggage weight of below 140kg as well as electric bikes (restricted to 25km/h) that have a combined rider and luggage weight of below 120kg.
Product Reviews (4)
Questions & Answers (2) Q & A
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Product Reviews (4)
Overall Product Rating 4.8 / 5
Very Stable
By Mihaly
03 Aug 2016
5 / 5
I recommend this product
Consthe bolt should be longer
Prosstrong, easy to mount
I started to use it a few weeks ago.
After a hundred miles there is no signes of any problem.
It is very stable and strong.
I use it on a tracking bike.
Very Strong With No Flex
By Jonathan Bingham
04 Jul 2016
4 / 5
I recommend this product
Conscould do with slightly longer bolt as it only just reached my star nut
ProsStrong, easy to fit, no flex
I fitted this stem to a single speed bike that requires a lot of leverage on the handlebars to get up hills. So i was pleasantly surprised when I fitted it that there was no increase in flex at all compared to the standard stem height. So far so good - more expensive that cheap copies on Ebay but generally Humpert products are reasonably priced and good quality
Does The Job Nicely!
By Torbjorn
27 Jun 2016
5 / 5
I recommend this product
ConsNone at this price
ProsWell made, easy to fit, inexpensive
Well made, easy to fit, inexpensive. Very happy. Does the job nicely!
By Brian Haxby
27 Jun 2016
5 / 5
I recommend this product
ProsComes with a selection of spacers.
A well made product that is reasonably priced and allows adjustment of the handlebars to a more comfortable hight.
Questions & Answers (2)
Compatibility with existing steerer tube.
19 May 2020
Does this product require a replacement extended centre threaded allen bolt to allow for the extra steerer height/length?
no, a longer bolt is supplied RT
Can I use this with carbon forks?
08 Jan 2019
I've just had a bike made for me that's a joy to ride, except for the fact that the steerer has been cut too short. It's a carbon steerer, so I'm concerned only to use products that are compatible with carbon. If this one isn't, do you stock anything that is?
Hi there,

Unfortunately it does not look as though we have anything like this that looks as though they are compatible with a carbon frame, and because we havent tried this we cannot say whether it would work or not.