SwissStop Catalyst Centrelock Disc Brake Rotor - 180mm - Centrelock YGroup_7033413828653 the AV-1 holds the axle

the AV-1 holds the axle to prevent it from spinning while you adjust your hub

1 Actuator installed

Also fits some Shimano® disc brake lockrings

spindle nuts

SwissStop Catalyst Centrelock Disc Brake Rotor - 180mm - Centrelock YGroup_7033413828653 the AV-1 holds the axleYou probably thought all Rotors were the same right? Well, not the Catalyst centerlock rotor from SwissStop. In 2015 some pretty smart engineers did a lot of testing of all the main rotors on the market and analysed the results. They then used their findings to develop a whole new rotor, one that offered sustained endurance and effective thermal management. What does this mean in the real world? Less brake fade, shorter stopping distances, slower wear