Quick Summary
The Azarxis AZ-OS0921 is a black aluminum bicycle seatpost measuring 27.2 mm in diameter and 350 mm long. Its listed material is 6061 aluminum alloy, and the specified weight is 164 g. Confirm the required diameter for your bicycle before choosing this size.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model and color | AZ-OS0921; black. |
| Diameter | 27.2 mm. Match this to the required seatpost diameter for the bicycle. |
| Length | 350 mm. Check that the length and insertion requirements suit the frame. |
| Material | 6061 aluminum alloy. |
| Wall thickness | 2 mm. |
| Weight | 164 g. |
| Saddle clamp | Not included; check whether a separate clamp is needed for your setup. |
Compatibility, Size and Fit
The listing specifies fit for bicycles with a 27.2 mm seat tube. Measure the required seatpost diameter rather than relying on a broad bike-type label: general references to road, mountain, BMX and other bicycles do not establish fit for every model. Check the required length and frame insertion requirements as well.
What Is Included
The listed item is one seatpost. A saddle clamp is not included. Check whether the clamp you plan to use is suitable for the saddle and post configuration.
What to Compare Before Buying
- Diameter: Confirm that 27.2 mm is the required size for your bicycle.
- Length: Compare the 350 mm post with your frame’s requirements.
- Clamp: Check whether you need to provide a separate saddle clamp.
Before You Decide
Confirm the exact diameter and length required by the frame, and check the clamp arrangement. Follow the bicycle and component manufacturers’ instructions for installation and use.










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