Motul RBF 660 Racing Brake Fluid (500ml) | Ultra-High Temp DOT 4 Fluid | By Motul

When you’re pushing your e-moto to the edge — whether it’s a Sur Ron, E-Ride Pro SS 3.0, Talaria, or RFN Rally Pro — every drop of braking performance matters. Motul RBF 660 Factory Line is engineered for the toughest race environments, with one of the highest boiling points available in DOT 4 fluid to resist fade, vapor lock, and inconsistency under extreme load.

Perfect for hydraulic disc brakes on high-performance e-motos, this 100% synthetic fluid is nitrogen-sealed to preserve shelf life and purity — ensuring you’re getting race-day performance every ride.

Features:

🔥 Extreme high-temp resistance – 328°C / 622°F dry boiling point

💧 Moisture-resistant – 204°C / 399°F wet boiling point

🏁 Race-developed – Ideal for road racing, enduro, and track use

🛠️ 100% synthetic DOT 4 (polyglycol-based)

🧪 Meets FMVSS 116 DOT 4, SAE J1703, ISO 4925

🚫 Nitrogen-filled for extended shelf life

⚙️ Compatible with Sur Ron, Talaria, E-Ride Pro, Rawrr, RFN, and more with DOT 3 or DOT 4 systems

⚠️ Important Compatibility Note:

• Do not mix DOT 4 with DOT 5.1 brake fluid — despite their similar labels, they have different chemical properties. Mixing them can cause the fluid to gel, resulting in brake failure and loss of control.

• Never mix mineral oil with DOT fluids (DOT 3, 4, or 5.1). These are incompatible systems — combining them can cause seal degradation, internal corrosion, and total brake system failure.

Always check your manufacturer’s brake fluid specification before servicing your system.

Specs:

• Volume: 500ml (0.5L)

• Weight: 3.31 lbs

• Package Dimensions: 3.31 x 2.20 x 2.20 in

• Brand Number: 101667

• Application: Hydraulic brakes + clutch systems

• Product Type: Brake Fluid

• Shelf Life: Nitrogen-sealed container