EBC SG2FK-064 2-Piece Fully Floating Brake Rotor for BBK 355mm

The EBC SG2FK-064 is a 355mm fully-floating 2-piece brake disc rotor engineered for use with EBC Brakes Racing's Balanced Brake Kits™ (BBK). Designed and manufactured at EBC's world headquarters in Northampton, UK, this rotor delivers race-derived braking performance equally at home on public roads and the track.

The outer friction ring is cast from G3500 high-carbon, high-copper disc alloy — a race-technology metallurgy that provides superior thermal conductivity and heat-cycling durability compared to standard OEM disc materials. The cast iron ring floats on EBC's patented SD-Drive technology bobbins, allowing up to 3mm of free expansion and contraction under extreme braking heat, effectively eliminating thermally-induced disc distortion.

Key Features:

• 355mm diameter fully-floating 2-piece disc rotor for EBC BBK applications
• G3500 high-carbon, high-copper cast iron friction ring for maximum thermal performance and wear resistance
• Patented SD-Drive bobbin technology — true fully-floating design allows up to 3mm of radial expansion under heat
• 48 directionally-handed curved vanes for maximum heat dissipation and balanced left/right cooling efficiency
• Aerospace-grade aluminum bell precision machined and hard anodized for durability and reduced unsprung weight
• Stainless steel bobbins machined from solid bar stock — corrosion resistant for long service life
• Anti-rattle spring clips at each bobbin location for silent on- and off-brake operation
• SG groove pattern on the braking annulus to resist cracking and allow gas escape, delaying brake fade
• Replaceable friction ring — only the outer ring needs replacement at wear-out, reducing long-term running costs
• Designed, manufactured, and run-out inspected in the UK

EBC's 2-piece floating rotors have demonstrated over 4x the thermal fatigue durability of typical OEM discs in the stringent Reg 90 dynamometer test, completing two full back-to-back cycles with zero disc cracking. This rotor is purpose-built as a component of the EBC Brakes Racing Balanced Brake Kit system and is not sold as a standalone fitment conversion.