Quick Summary
The LUNJE Adjustable Bike Stem is a 31.8 mm handlebar stem with a matte black 90 mm version and an adjustable angle up to 120°. It is presented as a stem riser and extender for road, city and MTB bikes.
For buyers choosing between versions, the key checks are handlebar diameter, fork steerer size, stem length and the selected colour or finish. The product is offered in 4 sizes, with 90 mm, 110 mm, 130 mm and 145 mm options.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | Adjustable bike stem – a stem choice for changing handlebar position and setup. |
| Handlebar diameter | 31.8 mm – check this against the handlebar clamp size. |
| Fork steerer diameter | 28.6 mm (1-1/8") – confirm this matches the bike before buying. |
| Angle | Up to 120° – choose this if you want a stem with a wide adjustment range. |
| Material | Aluminum / 6061-T6 aluminum – a material detail to compare with your preferred build. |
| Size options | 90 mm, 110 mm, 130 mm and 145 mm – select the length that suits your setup. |
| Colour / finish | Matte Black – the listed variant is the 90 mm version in this finish. |
What to Compare Before Buying
- Handlebar clamp size: This stem is for 31.8 mm handlebars, so that measurement needs to match your bar.
- Fork steerer size: The stated fit is 28.6 mm (1-1/8"), which is the main bike-side check.
- Stem length: Choose 90 mm, 110 mm, 130 mm or 145 mm depending on the riding position you want.
- Adjustment range: The 120° angle range gives a wide setup choice, so compare it with the posture you prefer.
- Variant: Confirm the selected size and finish before choosing an offer.
Who This Product May Suit
This stem is aimed at riders who want an adjustable handlebar position on a bike with a 31.8 mm bar and a 28.6 mm (1-1/8") steerer. The 90 mm version may suit buyers who want the listed matte black finish and a shorter stem length.
Choosing the Correct Version
The main decision here is the size choice. The product comes in 90 mm, 110 mm, 130 mm and 145 mm versions, and the black 90 mm version is one specific variant. Check the size and finish before selecting an offer so the stem matches the position and look you want.
Before You Decide
Confirm the 31.8 mm handlebar size, the 28.6 mm (1-1/8") steerer size and the stem length you want. Check that the selected version is the 90 mm matte black option if that is the one you need.
