EBC MD1188X X-Series Floating Motorcycle Brake Rotor with S-Drive System

The EBC MD1188X is a premium X-Series fully floating motorcycle brake rotor engineered for both road race and street sport applications. Built in the United Kingdom to exacting tolerances, this rotor delivers a significant performance upgrade over stock OEM units while reducing unsprung weight for improved handling and feel.

At the heart of the MD1188X is EBC's patented S-Drive (SD) Square Drive Button System, which uses square-sided rivets captured in square drive pockets. This allows the outer rotor blade to freely expand and contract under braking heat without suffering rivet lock — dramatically extending rotor service life compared to conventional circular-button designs. The result is a rotor that stays perfectly true and flat throughout its entire lifecycle.

Key Features:

• Full circle, circular rotor blade profile (X-Series design)
• Mill-hard stainless steel rotor blade for maximum friction and braking performance
• Patented S-Drive square drive button system prevents warping and vibration under hard braking
• Ultra-lightweight six-button construction reduces unit weight by up to 300 grams versus round-button designs
• Lightweight alloy center hub further reduces unsprung weight by 5–10% over stock
• True fully floating construction with greater inside-to-outside float tolerance
• Hand-built and inspected to minute tolerances for perfect balance and runout
• Direct OEM size-for-size replacement — no modification required
• Sold individually
• British made

The EBC X-Series rotor line has become one of the world's best-selling floating motorcycle rotors, trusted for street sport riding and road racing alike. The MD1188X delivers a measurable improvement in braking performance with up to 10% greater friction effect over standard heat-treated stainless steel OEM rotors.