ROCKSHOX REVERB AXS B1 VS FOX TRANSFER NEO FACTORY

The two biggest names in suspension both have wireless dropper seatposts - Alex Evans pits them against each other

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ROCKSHOX REVERB AXS B1

£535 https://zyrofisher.co.uk

Visually, the new Reverb AXS is a big departure from the previous model. Moving the battery and electronics from the saddle clamp to the seatpost collar, where they now protrude at the front of the post, has given it an all-new look. RockShox say the move has taken the battery out of the firing line of debris from the rear tyre and has also simplified the post's internals.

The Reverb AXS B1 uses exclusively air - instead of the outgoing model's mix of oil and air - to control its compression and extension, and is claimed to have a longer service life as a result. This design also means there's no need for a vent valve, as found on the bottom of the Reverb AXS A1 post, and designed to fix any unwanted squish at full extension.

Using a high-volume positive spring and a lowvolume negative one, RockShox have created a firm and supportive full-height feel. But dip it into its travel and a secondary negative air chamber is opened, allowing the post to have a small amount of suspension-like squish. Dubbed ActiveRide and first found on the Reverb AXS XPLR gravel post, this new tech is designed to make technical e-MTB climbs - often ridden with the post slightly compressed for extra control - more comfortable.

The new design means the Reverb AXS B1 has a standard two-bolt saddle clamp - gone is the single-bolt attachment of the old one. Offered in all common diameters and travel options from 100 to a massive 250mm (in 25mm increments), it's a surprise to learn that the latest post is more affordable than the outgoing one.

Now retailing for £535, it's also lighter than the closest equivalent A1 model, weighing in at 679g.