Quick Summary
The FOMTOR 31.8 x 70 mm bike handlebar stem is a 7 degree stem for bikes that use a 31.8 mm handlebar diameter and a 28.6 mm front fork stem diameter. It is listed as a lightweight stem with a 70 mm length measured as the center distance between the two holes.
This stem is described as using four bolts at the bar clamp and as connecting to the original front fork stem. If fit matters, compare the handlebar diameter, fork stem diameter and stem length before choosing an offer.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Brand | FOMTOR |
| Product type | Bike handlebar stem |
| Stem angle | 7 degree angle, which affects handlebar position |
| Handlebar diameter | 31.8 mm, so the handlebar must match this clamp size |
| Front fork stem diameter | 28.6 mm, so the steerer size must match this fit requirement |
| Length | 70 mm, measured as the center distance between the two holes |
| Weight | 110 g |
| Material | 6061 T6 aluminum alloy |
What to Compare Before Buying
- Handlebar diameter: This stem is for a 31.8 mm handlebar. Compare that with your bar size before buying.
- Fork stem diameter: The stated fit is 28.6 mm. Confirm your front fork stem matches this size.
- Stem length: The length is 70 mm. Check whether that reach matches your setup preference.
- Stem angle: The stem has a 7 degree angle, which changes the handlebar position relative to the fork.
- Mounting style: The four-bolt bar clamp is part of the design, so review whether your setup matches that clamp format.
When to Consider a Different Option
Choose a different stem if your handlebar size or fork stem diameter does not match the stated 31.8 mm and 28.6 mm fit. A different length should also be considered if 70 mm does not suit your current riding position.
Before You Decide
Confirm the 31.8 mm handlebar size, the 28.6 mm fork stem diameter and the 70 mm length before choosing an offer. The four-bolt clamp and 7 degree angle are part of the configuration, so they should match the setup you want.
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