Motul 101667 RBF 660 DOT 4 Racing Brake Fluid 500 mL

Vehicle Fitment

• Universal / Fits any vehicle requiring DOT 4 brake fluid

Features

• High-performance synthetic racing brake fluid
• Meets FMVSS 116 DOT 4 and SAE J1703 standards
• Very high dry boiling point for extreme heat resistance
• Elevated wet boiling point for consistent braking under load
• Polyglycol-based formula optimized for hydraulic brake and clutch systems
• Compatible with DOT 3 and DOT 4 systems
• Factory sealed bottle filled with nitrogen to prevent contamination
• Designed to reduce brake fade and vapor lock in aggressive driving

Specifications

• Brand: Motul
• Part Number: 101667
• Product: RBF 660 Synthetic Racing Brake Fluid
• Type: DOT 4 brake fluid
• Volume: 500 mL (0.5 L / 16.9 fl oz)
• Dry boiling point: Approximately 325-328 °C (617-622 °F)
• Wet boiling point: Approximately 204 °C (399 °F)
• Polyglycol base - not silicone
• Designed for hydraulic brake and clutch systems

Included Components

• 1x Bottle of Motul RBF 660 Racing Brake Fluid (Part 101667), 500 mL

Product Description

The Motul 101667 RBF 660 DOT 4 Racing Brake Fluid is a premium synthetic fluid engineered for high-performance braking systems. Its formulation is designed to handle the extreme heat generated during aggressive driving, racing, or track use. With a very high dry boiling point in the range of approximately 325-328 °C (617-622 °F) and a wet boiling point around 204 °C (399 °F), this DOT 4 fluid helps reduce brake fade and vapor lock in demanding conditions. 

Filled with nitrogen at the factory to extend shelf life and prevent contamination, Motul RBF 660 is suitable for any hydraulic actuated brake or clutch system that specifies DOT 4 fluid. Its polyglycol-based composition offers compatibility with DOT 3 and DOT 4 systems, though it should not be mixed with silicone-based DOT 5 fluids. This fluid is ideal for track day vehicles, motorsport applications, and high-stress street use where maintaining consistent brake performance is critical.

Universal by design, this brake fluid can be used across a wide range of cars and motorcycles requiring DOT 4 brake fluid. Always follow your vehicle manufacturer's recommendations for fluid type and change intervals, and ensure proper bleeding procedures are followed when servicing the brake system.