UPANBIKE Road Mountain Bike Bicycle Stem Riser Adapter 1 1/8" 22.2mm 25.4mm*150mm

Excellent, easy to install, fitted perfectly, does exactlt what its supposed to do, I needed it to raise me trike handlebars with 2 other parts of course bought on amazon

No problems!

Converted my threaded head stem to threadless, opening up a whole range of handlebar extenders, risers, clamps etc. Quality, finish and fit are very good. One point to note, if trying to fit an extender the top cap will need a bit taken off of its circumference. The best way to do this without a lathe is for a longish bolt in the top cap, secure tightly with a nut, place the exposed thread of the bolt in a drill chuck and spin it, using a file or sandpaper to reduce the size. Keep trying it in the extender socket until it's an easy sliding fit, then refit to the quill adapter. I've done this 3 times for different bikes now.

Converts 1” to 1-1/8 and give a few mm extra height. Solid and grips well.

I bought the Stem to go with my handlebars and my Quill Stem. Very sturdy and I could adjust it to suit me and make me feel comfortable when I am out and about on my bike. Very fast delivery., which was next day delivery. I am one very happy customer. JayTay

Important that you do not let the black part disconnect from main body, as impossible to retrive if it falls into the bike connection.

Not useful for me. Guess something was missing. Did not solve the purpose I wanted to use it. I needed to extend the handle for my kids bike.

Does the job as intended to convert an old 1" threaded headset for use with a more modern 1.1/8" threadless stem. Sturdy and easy to install. The only minor downside is that you have to use the provided bolt and top cap - the bolt head is not compatible with different styles of top cap. It doesn't affect functionality though.