Shimano tiagra sora r50t2 brake blocksalways use shimano brake shoes to ensure top brake performance and to maintain the safety of your shimano brake system shimano brake pads provide the ideal hardness for high stopping power combined with great levels of control suitable for standard shimano road caliper brakes and for use with aluminium rims featurescompatible with the following shimano models br 4600br 4500br 3500br 3400br 2400br r451br r450a 2 year warranty is offered with all shimano