Hayes hayes hfx 9magmx 1 disc brake padsother brake systems use organic friction materials in their brake pads to insulate the caliper from the heat generated during braking unfortunately their performance falls off dramatically in wet conditions and they wear rapidly in dirty and muddy environments but hayes developed a special frictional material for harley davidson motorcycles that provides the same positive brakingdry wet or muddy plus the non organic pads provide longer lifeespeci