For lesser performance orientated vehicles, a ventilated monoblock disc brake rotor produced from cast iron will more than suffice. For vehicles placing greater demand on the needed stopping power, a lightweight, composite, fully floating two-piece design is often preferred (the style of which is referred commonly as a peg or pin drive system).
Rotor styles may also differ depending on application. From face drilling, alternative grooves to improve initial bite and pad cutting, or indeed a 'wavy' outer milled profile as shown.
