Motul RBF660 Racing Brake Fluid - 500mL
Motul RBF 660 Racing Brake Fluid is a premium DOT 4‑rated synthetic fluid developed for high‑heat, high‑performance braking systems. With a dry boiling point of approximately 325 °C (617 °F) and a wet boiling point around 205 °C (401 °F), it delivers reliable pedal feel and fade resistance under extreme track conditions. This makes it ideal for serious motorsport, club track, or performance‑street builds that push brakes to their thermal edge. Supplied in a 500 mL bottle, perfect for full system flushes or multi‑event prep.
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| Part Number: | MOTUL660 |
- DOT 4 high‑performance racing brake fluid engineered for extreme thermal environments
- Dry Boiling Point: ~325 °C (617 °F) — significantly above standard DOT 4 minimums
- Wet Boiling Point: ~205 °C (401 °F) — maintaining high performance even when fluid has absorbed moisture
- 100% synthetic polyglycol‑based formulation for low compressibility, firm pedal feel and fade resistance
- Ideal for track days, club racing, endurance formats and performance street/track builds
- Compatible with brake systems calling for DOT 4 fluid (avoid mixing with silicone‑based/DOT 5 or mineral‑oil systems)
- Supplied in 500 mL bottle — adequate for full system flush and refill
- Designed to reduce brake fade, vapor lock and fluid boil under high‑stress applications
- Trusted by racers and performance drivers who require repeatable braking under load
When your braking system is being pushed into the red zone — repeated hard stops, elevated rotor/caliper temperatures, endurance sessions or high‑speed track days — you need a brake fluid that maintains integrity under pressure. Motul RBF 660 is engineered for exactly those conditions. This 100% synthetic polyglycol‑based fluid carries a dry boiling point of 325 °C (617 °F) and a wet boiling point of around 205 °C (401 °F), giving it a distinct edge over standard DOT 4 fluids in resisting vapor lock, soft pedal feel and compression under load.
Rated to meet and exceed DOT 4 specifications, RBF 660 is suited for high‑performance street/track hybrids, club racers and serious motorsport builds. It ensures consistent pedal feel and braking response session after session, and is ideal where rotor and caliper temperatures climb high — e.g., carbon or large steel rotors, multi‑day events, or heavy braking zones.
Though optimized for racing use, it remains compatible with systems that call for DOT 4 fluid, making it a versatile upgrade for braking systems that demand more than OEM. With a 500 mL bottle size, it’s also practical for performing full system flushes, popular with teams and enthusiasts prepping for the next event.
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