As we explained during the presentation of the new Shimano XTR, to fit the 12-speed set up the japanese brand restructured the freehub design with what’s known as Micro Spline technology to fit the cassette. As well as that comes the introduction of Scylence technology in Shimano’s rear hub. This new technology replaces the pawls with a ratchet system to reduce drag whilst coasting and create a virtually silent hub so you can focus more on the trail ahead.
That’s it: