Adjustable height handlebar stem?
 

Older road bikes had adjustable height handlebars. New bikes do not.

Does anyone make an adjustable height retrofit for new road bikes?

Thank you for your help.

Adjustable stems: https://www.google.com/webhp?sourcei...eview&tbm=shop

However, the "new" type handlebars are adjustable. It is done by rearranging the number of spacers above and below the stem -- assuming the fork steerer is long enough to accommodate spacers.

Here's one of a dozen articles describing how to do it: How to adjust handlebar height - BikeRadar

Yes, and maybe.

First of all, standard threadless stems are (usually) adjustable via moving spacers or removing and inverting the stem. They're also available in a variety of rise angles. So all things considered, there is probably more height adjustment in a threadless system than the 2-3" that was available in a typical quill stem, although it' not as convenient. I don't rank the convenience factor high because in 50 years of riding quill stem road bikes, I've very rarely moved a stem at all once I set the bike up, If I did move it was once and done.

But they do make hinged adjustable threadless stems which allow you to change the height by quite a bit, though it changes in an arc, and can bring the bar closer than you might want. Search under "adjustable stem.

Yes- Moving the OEM stem up and down the steerer, and using the supplied spacers above or under as needed to position the stem. Replacing the OEM stem with another that has a different angle and/or extension. Installing a steerer extender/riser and the stem that suits you. Of course cables might have to be re sized too...

Or did you mean to only limit the question to whether there's an adjustable stem, independent of it's location on the steerer? Well then another yes. many casual bikes come with a hinged stem that allows different angles/heights but fits a threadless steerer. Andy.

I have a Novara branded one of these on my Randonee.
NVO COMPONENTS.

Requires a threadless fork steerer tube modification but there is this one
Satori Handle Stem Easy Up - £34.99

The Specialized multi stems come in various base angles 12/17/24, but come with 3 inserts to alter the angle, so a 0 degree gives you + or - the base angle, a +/- 2 deg inserts and a +/- 4 deg insert. So you get 10 positions with a single stem without considering moving spacers to adjust the height.

Specialized Bicycle Components