Shimano RT56 rotors are designed to be durable and powerful. Note: In the case of carbon levers, wash them by using a soft cloth. Be sure to use a neutral detergent. Otherwise, the material may get damaged, and the strength may be affected. Avoid leaving the carbon levers in places where high temperatures are present. Also keep them well away from fire. When the bicycle wheel has been removed, it is recommended that pad spacers should be installed. Do not depress the brake lever while the wheel is removed. If the brake lever is depressed without the pad spacers installed, the pistons will protrude further than is normal. If that happens, consult a dealer. Use soapy water or a dry cloth when carrying out cleaning and maintenance of the brake system. Do not use commercially-available brake cleansers or silencing agents, as they can cause damage to parts such as seals. Products are not guaranteed against natural wear and deterioration from normal use and aging. For maximum performance we highly recommend SHIMANO lubricants and maintenance products.