MOTUL RBF 660 DOT 4 Racing Brake Fluid Factory Line

Motul RBF 660 DOT 4 Racing Brake Fluid, supplied in a 500ml bottle.

This 100% synthetic racing brake fluid is designed for hydraulic brake and clutch systems that require a non-silicone synthetic fluid. It is engineered to withstand the high temperatures generated by performance, track and racing use, making it suitable for vehicles with carbon, ceramic or conventional steel brake systems.

Motul RBF 660 Factory Line offers a very high dry boiling point of 325°C / 617°F and a wet boiling point of 205°C / 401°F, helping maintain reliable braking performance under demanding conditions.

Suitable for:

• Hydraulic brake systems requiring DOT 4 fluid
• Hydraulic clutch systems requiring compatible non-silicone synthetic fluid
• Racing, track day and high-performance road use
• Carbon, ceramic and conventional steel brake systems

Product details:

• 500ml bottle
• 100% synthetic racing brake fluid
• DOT 4 specification
• Dry boiling point: 325°C / 617°F
• Wet boiling point: 205°C / 401°F
• Colour: amber
• Viscosity at 100°C: 2.6 mm²/s
• Viscosity at -40°C: 1,698.0 mm²/s
• Meets FMVSS 116 DOT 4 and SAE J1703 / J1704 standards
• Exceeds DOT 3 and DOT 5.1 performance requirements, except viscosity at -40°C

Recommendations:

• Follow the vehicle manufacturer’s brake fluid change interval
• For track or racing use, adjust service intervals based on usage
• Do not mix with silicone-based DOT 5 or mineral-based LHM fluids
• Avoid mixing with lower-performance brake fluids
• Store in the original tightly sealed container to prevent moisture absorption
• Brake fluid can damage paint, varnish and skin, so rinse immediately with water if contact occurs