EBC MD856XC Full Floating Contour Brake Rotor with SD-System

The EBC MD856XC is a premium full floating motorcycle brake rotor featuring EBC's innovative XC contour design for reduced weight and improved performance. This rotor is engineered with the patented SD (Square Drive) button system that eliminates rotor warping and extends service life significantly beyond conventional rotors.

Key Features:

• Contoured profile reduces weight by up to 10% while maintaining optimal cooling mass
• High-friction stainless steel rotor blade provides up to 10% improvement in braking power over stock rotors
• Patented SD-System with square-sided drive buttons allows unrestricted thermal expansion, preventing distortion and warping
• Lightweight alloy center hub with 6-button drive system reduces overall weight
• Square drive buttons provide line contact versus point contact of circular buttons for superior durability
• Precision-machined in the United Kingdom to exacting tolerances
• Direct OEM replacement sizing for hassle-free installation

The SD-System technology represents a breakthrough in floating rotor design. Unlike conventional rotors with circular rivets that can cause "rivet lock" under heavy braking, the square-sided buttons allow the rotor blade to expand and contract freely in both directions. This prevents distortion failures and keeps the rotor perfectly flat throughout its service life, potentially lasting 5-10 times longer than conventional floating rotors. The result is consistent brake feel, reduced vibration, and extended rotor life even under demanding riding conditions.