Motul RBF660 Racing Brake Fluid – 100% Synthetic

Motul RBF660 Racing Brake Fluid is engineered for extreme performance under the most demanding conditions. Specially developed to handle the intense heat generated by racing carbon and ceramic brakes, it ensures consistent and reliable braking performance in motorsport applications.

With a dry boiling point of 328°C (622°F) and a wet boiling point of 204°C (399°F), RBF660 far exceeds DOT 4 and DOT 5.1 standards, making it one of the highest-performing brake fluids available. This allows drivers to maintain strong braking power even in extreme temperatures and wet conditions, reducing the risk of vapor lock and fade.

Ideal for all types of hydraulic brake and clutch systems (excluding silicone-based or mineral-based fluids), RBF660 offers unmatched stability, resistance to humidity absorption, and long-term reliability. Whether on track or during spirited street driving, it delivers confidence-inspiring braking when you need it most.

Key Features

• 100% synthetic, high-performance brake fluid
  
• Exceeds DOT 3, DOT 4, and DOT 5.1 standards (except DOT 5.1 viscosity at -40°C)
  
• Dry boiling point: 328°C (622°F) – among the highest in the industry
  
• Wet boiling point: 204°C (399°F) for reliable braking in humid conditions
  
• Provides stability and resistance against vapor lock under extreme use
  
• Compatible with hydraulic brake and clutch systems (non-silicone/mineral based)
  
• Color:

Do not mix with silicone-based (DOT 5) or mineral-based fluids (LHM).Store in original sealed container to avoid moisture absorption.
Aggressive chemical: avoid contact with skin, paint, or varnish.

Properties

• 100% Synthetic fluid, polyglycol bases. 
  
• Color Amber 
  
• Dry boiling point 328 °C / 622 °F
  
• Wet boiling point 204 °C / 399 °F 
  
• Viscosity at -40 °C (-40 °F) 1698 mm²/s 
  
• Viscosity at 100 °C (212 °F) 2.59 mm²/s