Quick Summary
The MTB Mountain Bike Stem is a short handlebar stem with a 31.8 mm handlebar diameter, 40 mm length, and 3 degree angle. It is described as suitable for most road bikes, fixed gear bicycles, mountain bikes, BMX bikes, and downhill use.
If you are comparing offers, check the stem clamp size, steerer tube diameter, and whether the short 40 mm length matches your setup.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Product type | Short handlebar stem for bicycle handlebar setup. |
| Handlebar diameter | 31.8 mm, so the handlebar clamp needs to match that size. |
| Length | 40 mm, which is the key fit check for cockpit reach. |
| Angle | 3 degree stem angle. |
| Steerer tube diameter | 28.6 mm (1-1/8 in), which should match the fork steerer interface. |
| Weight | 112 g. |
| Material | 6061 T6 aluminum alloy. |
What to Compare Before Buying
- Handlebar clamp size: This stem uses a 31.8 mm handlebar diameter. Compare that size with your handlebar.
- Steerer tube diameter: The stated steerer tube diameter is 28.6 mm (1-1/8 in). Match that to your fork and existing front end setup.
- Stem length: The 40 mm length affects cockpit reach, so compare it with the reach you want.
- Angle: The 3 degree angle is a specific fit detail to compare against your preferred bar position.
- Intended bike type: The stem is described for road bike, fixed gear, mountain bike, MTB, BMX, and downhill use, so confirm it matches your bicycle setup.
Compatible Setup Checks
This stem is centered on two fit points: the 31.8 mm handlebar clamp and the 28.6 mm steerer tube diameter. Those measurements matter more than the bike style name, so compare both against your current parts before choosing a version.
The short 40 mm format is the main dimensional choice here. Buyers who want a longer reach should look at a different stem length, while buyers replacing an existing short stem should confirm the angle and clamp sizes.
Before You Decide
Confirm the 31.8 mm handlebar size and 28.6 mm steerer tube diameter before choosing an offer. Also check that the 40 mm length and 3 degree angle match the cockpit setup you want.
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