My-FELT-Surplus30-Plus - Upgraded 203mm "Ice-Tech" Rotor on the front, compliments the Shimano XT M8120, 4-piston Caliper. I figured this upgrade was more about keeping the brakes from fading but in reality, the higher leverage, makes for WAY more Powerful brakes. It takes even less effort to lock up both wheels with the larger rotors which my beat-up hands are thankful for. I "NEED" to upgrade the INTENSE to this setup, when I return to the USA.