absoluteBLACK GRAPHENpads Disc Brake Pads - Shimano XTR 27. absoluteBLACK GRAPHENpads® are a completely new benchmark for the braking pad industry thanks to their unique approach to the design of backplate cooling fins bespoke backplate coating with graphene as well as a completely new friction compound which uses specially modified graphene instead of toxic copper.Specially modified graphene in the friction compound greatly improves braking performance durability and heat transfer to the backplateBackplates are entirely covered in graphene heat dissipating coating to achieve much greater heat transfer from the friction material to the cooling fins and at the same timePatented angled radiator fins for superior airflow and coolingProvide predictability power better modulation and faster stoppingExtraordinarily quiet even during long descends