Price for the set The Shimano Ultegra RT-MT800-S and RT-MT900-SS CenterLock Disc Brake Rotors are high-quality bicycle components designed for optimal performance. Made in Japan, these rotors feature a 160mm diameter and 140mm length, perfect for sport cycling enthusiasts. The CenterLock mounting type ensures easy installation and reliable braking power, making them a popular choice for serious cyclists looking to enhance their ride.