SDG Components Tellis V2 Upper Tube

No, this upper tube is specifically engineered for the Tellis V2 dropper post system. It will not fit the V1 model due to differences in the internal architecture and seal design.

Yes, it includes the M6 set screw required to secure the tube, but you should retain your existing collar and internal components for the full assembly.

No, this is a direct factory-spec replacement part designed to match your existing post's specific diameter and travel. It cannot be used to convert your seatpost to a different size or travel length.

You can typically find the diameter etched onto the lower portion of your current seatpost or by checking your bicycle frame's specifications. It is critical to match this exactly, as the 30.9mm and 31.6mm versions are not interchangeable.

If you are comfortable with basic bike maintenance and have the necessary tools, it is a straightforward process. However, ensure you have the correct service guide for the Tellis V2 to avoid damaging the internal seals during installation.