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Azarxis AZ-OS0921 27.2 x 350 mm Aluminum Bike Seatpost

$7.99 (Price correct as of 11/12/2026 23:57 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Azarxis AZ-OS0921 is a black 27.2 mm diameter, 350 mm long bicycle seatpost made from 6061 aluminum alloy. It has a listed 2 mm wall thickness and weighs 164 g. The saddle clamp is not included. Before choosing it, confirm the required diameter and length for your bicycle and check whether your setup needs a separate clamp.

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SKU: B094JCP8ZF Category:

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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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