Shimano China made rotors SM RT-66

Hi everyone,

I recently replaced a set of Giant OEM disc rotors were defective with new Shimano RT-66 rotors. To my surprise, I found out that they are now made in China and are stamped instead of being laser cut like Japan made rotors are. Apparently Shimano has moved production or cheaper components like low end rotors to China and stamping is used which means the finish of the rotors is very much shiny and I’m a little worried that performance will be affected. Anyone with experience with stamped rotors and any noticeable drop in braking performance? I’m thinking I should have just bough RT86 rotors instead and just absorb the 50% price increase.


Thanks all!