- AiRotor technology taken to the limit! - No other composite rotor even comes close - Braking Annulus:High grade SUS410 stainless steel Ground and Hardened to HRC 47 - Spider:Aero grade 7075-T6 heat treated alloy - Exceptional Heat Dissipation from the braking annulus, due to high thermal conduction of the spider - Fully Tested-Beyond all Standards