RPM Patent No. (M437801)
1. Thickness decrease by 0.2mm
2. Weight decrease by 30%
3. Exclusive wear indicator
4. Heat dispense performance 20% better
5. Less leverage effort by 20%
6. Good test result in rotor surfaces flatness and parallelism
7. Rotor balance test with only minor parallelism
8. Show no cracks under extreme test