PRODUCT DETAILS
Motul RBF 700 DOT 4 Racing Brake Fluid - 500mL
If you track your car and your brake pedal goes soft after a few hard laps, that's brake fade, and it's usually the fluid boiling, not the brakes themselves. Heat from hard braking boils cheaper fluid, the vapor compresses where liquid shouldn't, and you get a long, spongy pedal right when you need the brakes most. Motul RBF 700 is built to stop that: a 100% synthetic racing fluid with a 336°C (637°F) dry boiling point, high enough to stay liquid under the heat that cooks ordinary fluid. And because it meets DOT 4, you can run it on a street-driven car, not just a dedicated track car.
Why Boiling Point Is Everything
Brake fluid is incompressible when it's liquid, which is what makes your brakes work, push the pedal, the fluid transmits that force to the calipers. But if the fluid gets hot enough to boil, it turns to vapor, and vapor compresses. That's vapor lock: your pedal sinks to the floor, spongy and useless, because you're compressing gas bubbles instead of moving fluid. It happens under the sustained heat of hard track driving or repeated hard stops, exactly when brake failure is most dangerous.
A higher boiling point is the fix, fluid that stays liquid at temperatures that would boil cheaper fluid keeps your pedal firm and your brakes working. That's the entire point of a racing fluid like this.
336°C Dry, 205°C Wet, Beats DOT 5.1
The numbers are where RBF 700 stands out.
Its dry boiling point is 336°C (637°F), which is higher than conventional DOT 5.1 (260°C minimum) and well above standard DOT 4 (230°C minimum). That's a serious margin, it means the fluid holds up to track heat that would have cheaper fluid boiling and your pedal fading.
Just as important is the wet boiling point of 205°C (401°F). Brake fluid absorbs moisture from the air over time, and that water lowers the boiling point, so a fluid's real-world performance depends on its wet boiling point, not just the dry number. RBF 700's 205°C wet rating beats DOT 5.1 (180°C minimum) and far exceeds DOT 4 (155°C minimum), so it stays effective even as it ages and picks up moisture, and in wet conditions.
Track Capable, Street Legal
This is the useful part for a car that does both.
RBF 700 is a full racing fluid, but it meets the DOT 4 standard (FMVSS 116), which means it's approved for everyday road use. You can run it in a street-driven performance car, get track-grade fade resistance for your track days, and still be using a street-legal, properly-specified fluid the rest of the time. You're not swapping fluid before and after each track day, it's good for both.
It's 100% synthetic, for hydraulic brake and clutch systems, and compatible with other DOT 4 and DOT 5.1 fluids, so it mixes safely with what's likely already in your system during a flush (though a full flush is always best for getting the full benefit).
Plan Your Quantity
This is sold in individual 500mL (1 US pint) bottles. A full brake fluid flush on most cars takes more than one bottle, typically two or more depending on the vehicle and whether you're doing the clutch line too, so order enough for a complete flush rather than coming up short mid-bleed. One bottle is fine for topping off; buy multiple for a full flush.
This is for the track-day driver or performance enthusiast who's felt the pedal go soft under hard braking, or who wants to prevent it before it happens, and who values a fluid that handles track heat but stays street-legal. A 336°C dry boiling point that beats even DOT 5.1, a high wet boiling point that holds up as the fluid ages, and DOT 4 compliance so you run it every day. Order enough bottles for a full flush, bleed the system properly, and keep a firm pedal lap after lap.
Type: 100% synthetic racing brake fluid, DOT 4 (FMVSS 116). Dry boiling point: 336°C / 637°F. Wet boiling point: 205°C / 401°F. Use: hydraulic brake and clutch systems; track and street. Compatibility: mixes with DOT 4 and DOT 5.1 fluids. Size: 500mL (1 US pint), sold individually. Note: a full flush typically needs more than one bottle.
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