RockShox Reverb AXS B1 Dropper Post with 1-Button Left Hand Remote

The RockShox Reverb AXS B1 is the benchmark for premium wireless dropper posts—built for riders who want maximum saddle drop, flawless actuation, and a completely cable-free cockpit.

This latest B1 generation introduces RockShox’s new air-over-air design, creating a more robust, durable system with significantly improved serviceability and smoother operation. It also introduces ActiveRide, a compliant platform that provides subtle suspension when the post is slightly dropped—particularly useful for technical climbing on eMTBs. When fully extended, the post remains completely rigid for efficient pedalling.

Available in:

• 30.9mm
• 31.6mm
• 34.9mm diameters

…and with travel options from:

• 100mm
• 125mm
• 150mm
• 175mm
• 200mm
• 225mm
• 250mm

…the Reverb AXS offers one of the widest fitment ranges on the market, allowing riders to maximise drop while maintaining minimal insertion depth. RockShox specifically highlights this as the longest-travel wireless dropper platform they’ve produced.

The system is fully AXS wireless, using the same battery platform as SRAM AXS drivetrains and suspension systems. The included 1-button left-hand remote gives fast, intuitive actuation and a clean cockpit layout—especially useful for SRAM Transmission and Eagle AXS builds. The post is also fully E-Bike Approved and compatible with all major saddle rail standards:

• 7x7 round
• 7x9 oval
• 7x10 oval

This is not just convenience—it’s a genuine ride quality upgrade.

Key Features

• Fully wireless AXS electronic dropper post
• New air-over-air design for improved durability and serviceability
• ActiveRide compliant mode for technical eMTB climbing
• Includes 1-button left-hand AXS remote
• Available diameters:
  • 30.9mm
  • 31.6mm
  • 34.9mm
• Travel options:
  • 100 / 125 / 150 / 175 / 200 / 225 / 250mm
• E-Bike Approved
• Compatible with round and oval saddle rails
• Shared SRAM AXS battery platform
• Weight: approx. 712g (200mm / 31.6 without battery) + battery 25g
• Battery + charger included
• AXS controller integrates with full SRAM ecosystem

Torque Collective Insight

This is the dropper post we’d choose for a premium eMTB build.

The biggest difference isn’t just “wireless.”

It’s:

• cleaner cockpit setup
• instant consistent actuation
• zero cable friction
• easier frame compatibility
• significantly more available drop

On modern bikes like:

• Orbea Wild
• Norco Range VLT
• Trek Rail
• Specialized Levo
• YT Decoy

…maximising saddle drop makes a huge difference to descending confidence.

The Reverb AXS B1 is exceptional because it lets you run:
more drop, less insertion depth, better fitment

…and the new ActiveRide feature is genuinely useful for technical seated climbing on eMTBs.

This is one of those upgrades riders notice every single ride.

Fit & Sizing

Diameter Options

• 30.9mm
• 31.6mm
• 34.9mm

Travel Options

• 100mm
• 125mm
• 150mm
• 175mm
• 200mm
• 225mm
• 250mm

General Guidance

150–175mm

Best for:

• trail bikes
• smaller frames
• riders wanting balanced fitment

200–225mm

Best for:

• modern enduro and eMTB builds
• aggressive descending
• most premium builds

250mm

Best for:

• maximum drop setups
• taller riders
• bikes with ideal seat tube clearance

For most aggressive eMTB riders:

200mm–225mm is the sweet spot

If your size is not in stock - please get in touch!