Motul RBF 660 Factory Line Racing Brake Fluid DOT 4 – 500ml

MS Motorsport recommends 2-3 bottles for a full fluid flush.

Motul RBF 660 Factory Line Racing Brake Fluid is a premium 100% synthetic DOT 4 brake fluid developed for motorsport, track days and high-performance vehicles where extreme braking temperatures demand exceptional thermal resistance.

Engineered for hydraulically operated brake and clutch systems, Motul RBF 660 features an extremely high dry boiling point of 325°C (617°F) and wet boiling point of 205°C (401°F). This high-temperature performance helps maintain consistent braking efficiency under severe conditions while reducing the risk of vapour lock when the braking system is subjected to repeated heavy use.

Specially developed to withstand the extreme temperatures generated by racing carbon and ceramic brakes, RBF 660 is also suitable for conventional braking systems using steel discs, making it an excellent brake fluid upgrade for competition cars, track cars and compatible high-performance road vehicles.

Motul RBF 660 Specifications

Product: Motul RBF 660 Factory Line
Product Type: Racing Brake Fluid
Specification: FMVSS 116 DOT 4
Standards: SAE J1703 / J1704
Formula: 100% Synthetic
Dry Boiling Point: 325°C / 617°F
Wet Boiling Point: 205°C / 401°F
Application: Hydraulic Brake & Clutch Systems
Size: 500ml
Motul Part Number: 101666
EAN: 3374650235011

High-Performance Brake Fluid for Road & Track

Whether you're preparing a vehicle for a track day, racing competition or demanding performance driving, Motul RBF 660 provides the high-temperature performance required when braking systems are pushed hard.

Its combination of a 325°C dry boiling point, excellent wet boiling performance and Motul Factory Line racing formulation makes RBF 660 an excellent choice for drivers looking to upgrade from conventional DOT 4 brake fluid to a proven high-performance solution.

Important Compatibility Information

Motul RBF 660 is designed for brake and clutch systems requiring a non-silicone synthetic brake fluid. Do not mix with silicone-based DOT 5 brake fluid or mineral-based hydraulic fluids such as LHM.

Always check your vehicle or braking system manufacturer's specifications before use and follow the recommended brake fluid replacement intervals.