Mintex M 1144 works fine on std calipers, your slotted disc's will surely help cooling but if the mountain pass has a lot of hairpins then it might be a case that the system overheats due to the lack of airflow that would cool the disc and caliper. vented rotors with 4 pot calipers would possible be the cure and then you have 2 options, the heavy and more expensive one is CC, the lighter and with much better pedal feel and also cheaper option is Hi-Spec. for this later option i have the parts codes ( disc,rotor,alloy bell ) for a plug and play system.