Quick Summary
The PLATT bike stem is a 70 mm stem with a 6 degree angle and a 31.8 mm clamp diameter. It is described as an aluminium alloy bicycle stem riser for bikes including BMX, MTB and road bikes.
The stated steerer clamp size is 28.6 mm (1-1/8”). If that does not match the front fork steerer on the bike, it is not the right fit.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | PLATT. Useful for matching the exact model. |
| Product type | Bike stem / stem riser. This is the part that connects the handlebar to the front fork area. |
| Length | 70 mm. Check this against the handling and position you want. |
| Angle | 6 degree. Confirm the stem angle suits the position you want on the bike. |
| Clamp diameter | 31.8 mm. The handlebar clamp must match the bar diameter. |
| Steerer clamp | 28.6 mm (1-1/8”). The fork steerer must match this size. |
| Material | Aluminium alloy. Relevant for buyers comparing material choice. |
What to Compare Before Buying
- Handlebar clamp diameter: This stem uses a 31.8 mm clamp, so the handlebar must match.
- Steerer clamp size: The stated size is 28.6 mm (1-1/8”). Confirm the fork steerer matches before fitting.
- Length: The 70 mm length affects the riding position and reach.
- Angle: The 6 degree angle is part of the fit and position choice.
Compatibility, Size and Fit
This stem is described for BMX, MTB, road bike, mountain bike, downhill bike, track bike and DH use. The important fit checks are the 31.8 mm handlebar clamp and the 28.6 mm steerer clamp.
Check both measurements against the bike you already have before choosing an offer. The stated length and angle are also worth comparing if you are replacing an existing stem and want a similar riding position.
Before You Decide
Confirm the 31.8 mm handlebar clamp and 28.6 mm steerer clamp match your bike. Check whether the 70 mm length and 6 degree angle suit the position you want. If you are replacing an existing stem, compare the current measurements before choosing an offer.
