Quick Summary
The FOMTOR 31.8 x 90 mm 7 Degree Bike Handlebar Stem is a handlebar stem for bikes with the stated 31.8 mm handlebar diameter and 90 mm length. It is listed with a +/- 7 degree angle and a 28.6 mm front fork stem diameter, so those fit points matter most before choosing it.
The stem is described as a light weight part with a stated weight of 120 g. It is also described as CNC machined 6061 T6 aluminum alloy, which is useful context when comparing similar stems for material and finish.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | FOMTOR, which helps identify the exact stem style being compared. |
| Product type | Bike handlebar stem for handlebar and fork connection sizing. |
| Handlebar diameter | 31.8 mm, a key fit check for the handlebar clamp. |
| Front fork stem diameter | 28.6 mm, a key fit check for the steerer connection. |
| Length | 90 mm, measured from the center distance of the two holes. |
| Angle | +/- 7 degree, which affects the stem’s position. |
| Weight | 120 g, useful when comparing stem weight. |
| Material | CNC machined 6061 T6 aluminum alloy, a concrete construction detail for comparison. |
What to Compare Before Buying
- Handlebar diameter: This stem is stated for 31.8 mm handlebars. Compare that with your bar size before buying.
- Fork stem diameter: The listed diameter is 28.6 mm. Check that against the bike’s front fork stem size.
- Length: The 90 mm length affects reach, so compare it with the position you want on the bike.
- Angle: The +/- 7 degree angle changes stem position, so compare it with your preferred cockpit setup.
- Weight: The stated 120 g weight may matter if you are comparing stems by mass.
Compatibility, Size and Fit
This stem is described as suitable for road bike, mountain bike, track bike, MTB, BMX and DH use. The important fit checks are the 31.8 mm handlebar diameter, the 28.6 mm front fork stem diameter and the 90 mm length. Those are the fields to compare with your current parts before selecting it.
Before You Decide
Confirm the 31.8 mm handlebar size, the 28.6 mm fork stem diameter and the 90 mm length before choosing an offer. If your current setup uses a different size or reach, a different stem version is the better match.
Follow the bike manufacturer’s and component manufacturer’s instructions for installation and fit.
Steerer Fit Check
Along with the stated steerer diameter, compare the stem’s clamp height with the usable steerer length on your fork. Confirm the stem can be positioned and secured as directed by the bike and component manufacturers.
Reviews
There are no reviews yet.