MOTUL RBF 660 Factory Line Racing Brake Fluid DOT 4 – Car and Motorcycle Brake Oil – 500 ml
MOTUL RBF 660 Factory Line: racing brake fluid DOT 4 500 ml
MOTUL RBF 660 Factory Line 500 ml is a 100% synthetic, non-silicone racing brake fluid developed for hydraulic brake and clutch systems subjected to high temperatures. It is the recommended choice for sports cars, modified vehicles, track days, racing use, and high-performance road driving when the manufacturer requires a fluid compatible with the DOT 4 specification.
High Temperature Resistance
The main advantage of MOTUL RBF 660 is its high thermal resistance. The dry boiling point reaches 325 °C, while the wet boiling point is 205 °C. These values help maintain a more consistent pedal response during repeated and intense braking, reducing the risk of vapor bubble formation in the system when operating at very high temperatures.
The product can be used with conventional steel disc systems and has been formulated to withstand the typical stresses of competition braking systems.
Ideal for Sport and Track Day Use
RBF 660 is particularly suitable for those who want to improve the consistency of the braking system without choosing a fluid intended exclusively for the most extreme racing applications. It therefore represents a balanced solution for street sports cars, vehicles used in track days, vehicles equipped with larger calipers, braided steel lines, and high-performance pads.
It can also be used on Alfa Romeo Giulia, Alfa Romeo Stelvio, and other sports cars, provided the braking system requires a compatible specification. Proper application should always be verified in the owner's manual or according to the vehicle manufacturer's instructions.
Technical Product Features:
- Brand: MOTUL
- Product: RBF 660 Factory Line
- Type: synthetic racing brake fluid
- Specification: FMVSS 116 DOT 4
- Base: non-silicone synthetic
- Dry boiling point: 325 °C
- Wet boiling point: 205 °C
- Viscosity at 100 °C: 2.6 mm²/s
- Color: amber
- Size: 500 ml
- Application: hydraulic brake and clutch controls
Usage Instructions
For best performance, it is recommended to perform a complete system bleed, avoiding contamination with old or inferior quality fluid. Do not mix with silicone-based DOT 5 fluids or mineral LHM fluids.
Since brake fluids absorb moisture from the air, the container must be resealed immediately and stored in the original container. The replacement interval should be defined based on manufacturer recommendations and usage severity. More frequent checks and replacements are advisable for track use.
500 ml Packaging
The 500 ml packaging is practical for maintenance, bleeding, and brake fluid replacement on many systems. However, the required quantity varies depending on the vehicle and type of intervention. For a complete system flush, more than one bottle may be necessary.
Trust RFcarsystem for components and materials dedicated to brake system maintenance and upgrades. If in doubt about compatibility or required quantity, contact our customer service before purchase.
F A Q :
Can MOTUL RBF 660 be used on the road?
Yes, when the vehicle requires a DOT 4 compatible brake fluid. It is still necessary to follow the manufacturer's instructions.
What is the boiling point of RBF 660?
The dry boiling point is 325 °C, while the wet boiling point is 205 °C.
Can I mix it with another brake fluid?
To avoid reducing performance, a complete replacement is recommended. It must not be mixed with silicone-based DOT 5 fluids or mineral LHM fluids.
What is the difference between MOTUL RBF 660 and RBF 700?
RBF 700 offers a higher dry boiling point: 336 °C compared to 325 °C for RBF 660. The declared wet boiling point is 205 °C for both.
- RBF 660: “The ideal choice for sporty driving, track days, and brake system upgrades.”
- RBF 700: “The racing solution for maximum thermal margin in the most extreme conditions.”
This differentiation comes from the higher dry boiling point of RBF 700 and its specific positioning for extreme racing applications.