SHIMANO DEORE XT - 4-Piston - ICE TECHNOLOGIES - Hydraulic Disc Brake Caliper. Series: DEORE XT M8100 Series. - Quicker Piston retraction. - Four Piston. Brake Type: Hydraulic Disc Brake. - Reduces disc brake rotor wobbling noise and increases braking power by 10% (vs. M8000).
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