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Bicycle Stem Riser Adapter
Raises the height of your handlebars by increasing the height of your stem.
Size specifications
- Fit bike stem diameter:28.6mm
- Total length:150mm
- Base Diameter(Upper diameter):1 1/8” (28.6mm)
- Steerer tube diameter:22.2mm/25.4mm
Installation view:
- Converts a threaded quill setup to threadless
- (bike handlebar and stem are not included)
All parts of the stem extender adapter riser
Bob
Reviewed in the United States on February 27, 2025
I heard this one ( or maybe another) got recalled, but it didn't break on me...i don't know what those dudes were doing, maybe they were jumping from 50 meter cliffs 🤦🏻
Davids@24
Reviewed in the United States on January 30, 2025
Good
Dennis Tejada
Reviewed in the United States on August 4, 2024
Have a Kent Genesis Saber 700c with 80's/90's technology. Use this UPANBIKE Riser adapter to replace the most uncomfortable one-piece handlebar and stem and added a Meroca SS01 Suspension stem and a Salsa Cowbell Handlebar. Highly recommend this UPANDBIKE Riser Adapter.
John Jaramillo
Reviewed in the United States on February 17, 2024
This stem adapter did the job! I was looking for a stem that would allow me to put a "threadless stem" in the place of my quill stem for my Kent KZR mountain bike. It worked & I was able to put a 1 1/8 stem that would hold a fat handlebar or a 31.8. Bike looks great! It made an aesthetic difference!
Pjisimo
Reviewed in the United States on April 22, 2024
The stem does it’s job and I found the tolerances acceptable.
Josh Fora
Reviewed in Canada on April 15, 2024
Works well on my bike
Paul A.
Reviewed in the United States on May 19, 2022
Bought this for a drift trike project my son and I were working on. He cut up an old style BMX bike for the front wheel assembly. Wanted to use an updated stem and handlebar set up. This allowed us to use the fork tube he welded into his frame. Easy install. Seems well made. Would buy again.
russell drumm
Reviewed in Canada on September 6, 2021
Awesome worked great made new handlebars fit on my old bike to make comfortable for me
Larandol
Reviewed in the United States on June 27, 2021
Not as nice as the one I had but it is solid and works well. It doesn’t look as good as the more expensive ones but for $9.99 it gets the job done.
Doanster
Reviewed in Canada on April 26, 2021
Works exactly as described. Brings my beloved 90s bike into modern times. Easy install (make sure to use grease, or else you'll regret it later!)
M. Thomas
Reviewed in Australia on April 1, 2021
Good product, well made.
Jedd
Reviewed in Canada on June 29, 2019
Exactly what I needed to convert my road bike with the one inch quill stem to an “a-head”stem. Everything fits well and seems to be well made. The finish is a bit textured, which works fine for me, but may not be to everyone’s liking. I haven’t fully installed it yet, but it seems like there is only room for one or two spacers, so be aware if you need a lot of height.
mrteamriab
Reviewed in the United States on September 7, 2018
Ordered the 25.4mm insertion diameter size to fit into my son's 25.4mm ID quill fork. Fit was very tight and I had to use quite a bit of force to insert it to the depth I wanted it. I greased the expansion bolt and inside of the fork steerer tube to [hopefully] prevent seizing down the road. Once in place, the adapter functions as expected and holds the threadless stem without any issues. I got the silver version and the finish has a uniform shot-peen-like finish. Adapter seems sturdy and does not wiggle or twist once installed. The price was right, too.
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