RockShox Reverb AXS B1 Upper Tube

No, this specific upper tube is designed exclusively for the B1 generation of the Reverb AXS wireless dropper post. It will not fit older Reverb models or non-AXS versions.

You should consider a replacement if you notice significant scoring, scratches, or wear on the stanchion that causes stiction or air leakage. If the post no longer holds pressure or operates smoothly despite a standard service, the upper tube surface may be compromised.

No, this is the upper tube assembly only. You will need to reuse your existing internal components or purchase a separate service kit if you are performing a full overhaul of your dropper post.

Replacing the upper tube requires specific tools and a solid understanding of the Reverb AXS hydraulic system. If you are not comfortable working with pressurized hydraulic components, we recommend having a certified bike mechanic perform the installation to ensure proper function and safety.

Yes, this upper tube is available in both 30.9 mm and 31.6 mm diameters to match the specific seat tube size of your frame. Be sure to verify your current post's diameter before ordering to ensure a correct fit.