Motul RBF 660 Factory Line Racing Brake Fluid – High Performance Fully Synthetic DOT 4

Motul RBF 660 Factory Line is a 100% synthetic, high-performance DOT 4 racing brake fluid, developed for the extreme demands of motorsport and high-performance driving.

Suitable for all hydraulic brake and clutch systems requiring a non-silicone synthetic fluid, RBF 660 is specially formulated to withstand the high temperatures generated by steel and carbon racing brake systems while maintaining consistent braking performance.

Features

• 100% synthetic polyglycol-based brake fluid.
• Ultra-high dry boiling point of 328°C (622°F).
• High wet boiling point of 204°C (399°F) for reliable performance in demanding conditions.
• Suitable for racing, track day and high-performance road use.
• Exceeds FMVSS 116 DOT 4, SAE J1703, SAE J1704 and ISO 4925 standards.

Performance

The exceptionally high boiling point helps prevent vapour lock during extreme braking, while the high wet boiling point ensures dependable braking performance even after moisture absorption.

Recommendations

• Do not mix with silicone-based (DOT 5) or mineral-based (LHM) fluids.
• Avoid mixing with lower-performance brake fluids.
• Store tightly sealed to prevent moisture absorption.
• Avoid contact with paintwork and skin. Rinse thoroughly with water if contact occurs.

Motul RBF 660 Factory Line is the ideal choice for motorsport, track day and performance road vehicles where maximum braking consistency and thermal stability are essential.