RockShox Reverb AXS B2 Dropper Seatpost

The RockShox Reverb AXS B2 Dropper Seatpost is a fully wireless dropper post built for simple setup, strong reliability, and wide travel adjustment across modern MTB and E-MTB builds. It uses the AXS wireless ecosystem to remove cables and hoses, adds a tougher air-over-air internal design, and introduces ActiveRide support for control on technical climbs. Broad travel options and wide saddle compatibility make it suitable for XC, trail, enduro, and E-MTB bikes.

Key Features and Benefits:

• Fully wireless AXS control system: Removes hoses and cables from the bike which simplifies installation, reduces maintenance, and creates a clean cockpit layout that is easier to set up and adjust long term.
• New air-over-air internal design: Uses a stronger internal air spring layout that improves durability under heavy use and repeated cycles, resulting in longer service intervals and dependable performance across demanding riding.
• ActiveRide compliance when not fully extended: Provides a small amount of built-in suspension when climbing with the post partially dropped, improving traction and comfort on technical E-MTB and steep terrain for better seated control.
• Wide travel range from 100mm to 250mm: Offers multiple drop options to match different riding styles and frame sizes, ensuring riders can achieve optimal saddle height adjustment for climbing efficiency and descending clearance.
• Compatible with all common saddle rail standards: Supports round and oval rails including 7×7, 7×9, and 7×10 designs, allowing easy transfer of existing saddles and reducing compatibility concerns during upgrades.
• AXS battery power and E-bike approval: Uses a shared AXS battery platform for quick swaps and charging, providing consistent wireless performance and reliable function on both standard MTB and E-MTB systems.

Consistent saddle height control improves pedalling efficiency and technical climbing performance while keeping the bike ready for fast descents. The stronger internals and wireless design reduce servicing demands and simplify long-term ownership. Broad travel choices ensure correct fit across modern frame geometries and riding disciplines.

Upgrade your bike with reliable wireless dropper control and long-term durability that supports every ride and build choice.

PLEASE NOTE; Reverb AXS controller is NOT included. Please click here to purchase the controller.

Features:

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