RockShox Reverb AXS B1 Dropper Post

RockShox Reverb AXS B1 Wireless Dropper Post

The Reverb AXS B1 is RockShox's flagship wireless dropper post, built around a new air-over-air design that improves durability, serviceability, and actuation smoothness over the previous generation. The completely cable-free setup keeps your cockpit clean and eliminates routing compromises — particularly useful on full-suspension eMTBs where cable clutter is already a real issue.

What It Does

The B1 introduces ActiveRide — a compliant platform that allows subtle movement when the post is partially dropped, which can help absorb chatter on technical climbs without requiring you to fully lower the saddle. When fully extended, the post locks out rigid for efficient pedalling. Actuation is handled wirelessly via a single-button left-hand remote included in the box.

Technical Insight

The air-over-air internals replace the previous hydraulic lower circuit, making the post lighter to service and more consistent across temperature ranges. All four travel options — 175mm, 200mm, 225mm, and 250mm — are available in the 31.6mm diameter here at Torque Collective, covering a wide range of frame sizes and rider heights.

Sizing & Fit

This listing covers the 31.6mm diameter only, in 175mm, 200mm, 225mm, and 250mm travel. Check your frame's seat tube internal diameter and minimum insertion depth before selecting travel — maximising drop without compromising the minimum insertion requirement is the key consideration. If you're unsure, get in touch with the workshop.

Why Torque Collective Stock This

Wireless droppers remove one more cable from an already complex eMTB build, and the Reverb AXS is the most established wireless dropper on the market. The B1's improved serviceability means it's a post we can realistically maintain in-workshop, which matters for riders who want long-term reliability rather than a disposable component.