The Adaptor Stem Alloy ST-L124 is an adapter for converting the fork steerer tube size to 28.6 mm / 1-1/8 inch, allowing it to be used with ahead / threadless stems featuring a 28.6 mm clamp.
This product is suitable for older bicycles or certain configurations that still use forks with smaller steerer sizes but want to use a modern 28.6 mm stem.
Three sizes are available for the lower section of the adapter: 21.1 mm, 22.2 mm, and 25.4 mm. Choose the variant according to the inner size of the fork steerer being used.
Product Variants
| Variant | Description |
|---|---|
| 28.6–21.1 mm Black | Converts a 21.1 mm steerer to a 28.6 mm stem clamp size |
| 28.6–22.2 mm Black | Converts the 22.2 mm lower adapter size to a 28.6 mm stem clamp size |
| 28.6–25.4 mm Black | Converts a 25.4 mm steerer to a 28.6 mm stem clamp size |
Product Specifications
| Specification | Details |
|---|---|
| Model | ST-L124 |
| Type | Stem Adapter / Steerer Tube Adapter |
| Material | Aluminum Alloy |
| Color | Black |
| Upper Size | 28.6 mm / 1-1/8 inch |
| Lower Size | 21.1 mm, 22.2 mm, or 25.4 mm |
| Function | Converts the steerer tube size for compatibility with a 28.6 mm stem |
| Usage | Older bicycles, commuter bicycles, certain folding bicycles, older MTBs, certain touring bikes |
Advantages
- Converts the steerer tube size to 28.6 mm
- Can be used with 28.6 mm ahead/threadless stems
- Available in 21.1 mm, 22.2 mm, and 25.4 mm sizes
- Aluminum alloy material
- A practical solution for upgrading the stem on an older bicycle
- Black color with a neutral appearance
Notes
Make sure the fork steerer size matches the selected adapter variant. The stem used must have a 28.6 mm / 1-1/8 inch clamp.
This product is not primarily intended to raise the stem height, although the stem position may change depending on the installation configuration. The main purpose of this product is converting the steerer size for use with a 28.6 mm stem.