RockShox Seatpost Reverb AXS B2: 100MM X 30.9MM

Reverb AXS brings fully wireless, customisable dropper-post control to the AXS ecosystem, now with a stronger, more durable internal design and improved battery clearance. The new air-over-air system increases robustness for high-use riders, while ActiveRide delivers a compliant, suspended feel when the post is not fully extended—particularly useful for technical E-MTB climbing. With travel options from 100 mm to 250 mm and full compatibility with all common saddle-rail standards, Reverb AXS is built to serve everything from lightweight XC builds to long-travel enduro and E-MTB setups.

Features
• Travel options from 100 mm to 250 mm
• New, more durable air-over-air internal design
• ActiveRide provides a compliant platform when not fully extended
• Compatible with all saddle-rail types (7×7, 7×9, 7×10)

Specifications
Post Diameter: 30.9 mm, 31.6 mm, 34.9 mm
Travel: 100 mm, 125 mm, 150 mm, 175 mm, 200 mm, 225 mm, 250 mm
Remote: AXS controller sold separately
Saddle Rail Compatibility: Round / Oval (7×9 & 7×10)
E-Bike Approved: Yes
Power Source: AXS battery
Weight: 543–832 g