SDG Components Tellis V2 Upper Tube

No, this upper tube is specifically engineered for the Tellis V2 dropper post system. It is not backward compatible with the first-generation model due to differences in the internal architecture and seal interface.

You should consider a replacement if you notice deep scratches, scoring, or pitting on the stanchion surface that causes the post to bind or leak air. If the post has developed excessive side-to-side play that cannot be fixed by a standard service kit, the upper tube may be worn beyond repair.

This is a standalone upper tube replacement. It does not include new bushings, seals, or internal cartridges, so you will need to reuse your existing hardware or purchase a separate service kit to complete the rebuild.

No, the diameters are not interchangeable. You must match the upper tube diameter exactly to your specific seatpost model to ensure a proper fit and prevent damage to the internal seals and collar.

Yes, if you are comfortable performing a full teardown of your dropper post. You will need standard bike tools, including a strap wrench and appropriate grease, but be aware that improper installation can affect the post's actuation and reliability.