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 an ahead / threadless stem featuring a 28.6 mm clamp.
This product is suitable for older bicycles or specific configurations that still use a fork with a smaller steerer size but want to use a modern 28.6 mm stem.
Two variants are available for the adapter's lower section: 21.1 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 |
| 28.6–25.4 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 |
| Top Size | 28.6 mm / 1-1/8 inch |
| Bottom Size | 21.1 mm or 25.4 mm |
| Function | Converts the steerer tube size for compatibility with a 28.6 mm stem |
| Applications | Older bicycles, commuter bikes, certain folding bikes, 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 and 25.4 mm sizes
- Aluminum alloy construction
- 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 increase stem height, although the stem position may change depending on the installation configuration. The main purpose of this product is to convert the steerer size so a 28.6 mm stem can be used.