HOW DOES IT WORK? outer and inner diameter of the disk have a non-round design that enables better radial expansion of the rotor under extreme heat conditions. Moreover piercing holes are replacd by edges specifically designed to grow brake pad regeneration process CHARACTERISTICS > BENEFITS more braking grip > highly reactive less weight > better handling high heat dissipation > stable power at all conditions Compatible with: - Yamaha: R1 04-06_M, R1 07-08_M, R1 09-14_M, R6 03-04_M, R6 05_M, R6 06-07_M, R6 08-15_M