Shimano – Rotor de frein à disque Deore SLX SM RT66 6 boulons, 160mm 180mm 203mm, Original - AliExpress
How do I know which one is genuine on SM-RT66 rotors? One says made in China (SK) while other says Japan (RA). Both has different edges. Please confirm. Got china one from
Shimano SLX RT66 & RT64 Brake Disc Rotor Compared, 6-bolt and Center Lock - YouTube
Disque de frein à 6 trous 220/203/180/160 mm | SHIMANO BIKE-FRANCE