The Supermoto version has an integrated reservoir and comes with an optional brake light switch for street conversion: The street version is to be used with a separated reservoir (Braking does not sell-OE is recommended) and comes with the brake light switch and an optional bracket for rear mirror fitment
The goal of the radial master cylinder vs. the stock axial master cylinder (radial vs. axial is the direction of the piston’s movement) is that you obtain the same or more braking power by using less force on the lever