Shimano acera altus b01s disc brake padsalways use shimano disc brake pads to ensure top brake performance and to maintain the safety of your shimano brake system shimano have adopted ice technologies into their disc brake pad range to provide the cooling technology required for consistant performance these pads have an above average stopping power rating resin pad featuresresin pads make less noise than metal pads and offer better modulation flexible compoundless noisefocus on controllabl