EBC SG2FK-066 2-Piece Floating Disc Rotor for BBK 380mm Big Brake Kit

The EBC SG2FK-066 is a high-performance two-piece floating disc rotor designed as a direct replacement or upgrade rotor for 380mm Big Brake Kit (BBK) applications. Engineered for demanding street and track use, this rotor pairs a lightweight aluminum bell/hat with a separate cast iron friction ring, reducing unsprung and rotating mass compared to conventional one-piece rotor designs.

EBC's two-piece floating rotor construction allows the iron ring to expand and contract freely during intense heat cycles, significantly reducing the risk of rotor warping and thermal distortion that can occur under sustained high-load braking. This design is particularly well-suited to performance vehicles running large-caliper big brake kits where braking temperatures regularly exceed those seen in standard OEM systems.

Key Features:

• Two-piece floating construction — aluminum hat paired with an iron friction ring for reduced weight and improved thermal management
• 380mm rotor diameter — designed to match BBK big brake kit specifications
• Floating bobbins — allow the friction ring to float and expand under heat, preventing warping
• High-carbon iron friction ring — excellent bite, fade resistance, and pad compatibility
• Reduced unsprung weight — improves handling and steering response over solid one-piece rotors
• Compatible with EBC and other leading brake pad compounds
• OE-style fit for big brake kit applications using 380mm rotors

The EBC SG2FK-066 is built to exacting tolerances and is a trusted choice for performance and motorsport enthusiasts seeking superior braking consistency, longevity, and heat management in a 380mm BBK fitment.