Rotor Shimano DURA-ACE RT-CL900 S DISC BRAKE ROTOR WITH LOCKRING - 160MM CENTERLOCK 1.5MM SILVER part name: Rotorpart make model: ShimanoDURA-ACE RT-CL900 S DISC BRAKE ROTOR WITH LOCKRING - 160MM CENTERLOCK 1.5MM SILVERbike part approved: