With eTap, Sram has already launched an electronic shifting system for road bikes, and now the market launch of electronic shifting for mountain bikes has begun. The platform is called Sram AXS, an abbreviation for Access, and is currently being launched for the XX1 level for cross-country and X01 for enduro applications. Sram is also entering the race with a wireless dropper post, the Reverb AXS.

Both XX1 Eagle AXS and X01 Eagle AXS combine the technologies of the Sram Eagle 1x drivetrains with a wireless electronic system consisting of rear derailleur and controller. With the completely new shift lever/shift paddle concept, a click of the finger is all it takes to initiate a shift. The rear derailleur is also a completely new development. It was specially developed for operation with a motor instead of a cable. In addition, the components controlled by AXS allow individual adjustment to the needs and requirements of the rider via the AXS app on the smartphone.

Shift mechanism and controller

The rear derailleur is an important component of the new groupset: it has a 10 millimeter shorter cage, is located further forward and further inwards than the mechanical Eagle and therefore offers more ground clearance and a larger cassette wrap.

The control unit, which is also equipped with the shift paddles, is located on the right-hand side of the handlebars. With the help of the AXS app, the controller can be freely configured according to your preferences, allowing you to determine which controller does what. There is a choice of three functions: Downshift, upshift and the dropper function of the Reverb AXS. In addition to the normal shift paddles on the controller, there is also a "Secret Sprint" shift paddle on the front, roughly where the crook of your index finger is. This should allow you to shift gears at lightning speed without having to loosen your hand on the handlebars.

Revolutionarily simple mounting

Sram also claims that the new drivetrain is very easy to install: All you have to do is screw the components to the bike, adjust three limiter screws and press the button for pairing. The Eagle AXS therefore has automatic, electronic adjustment and trimming. It is always perfectly adjusted. Without any additional effort when shifting gears or any peculiarities that need to be learned first. The gearshift also works without a smartphone connection, but without this, there is no need for customization.

sram.com