MOTUL RBF 660 FL
Fully synthetic racing brake fluid - DOT 4 Very high boiling point: 325°C / 617°F
For hydraulically operated brake and clutch systems
Instructions for use:
For all types of hydraulically operated brake and clutch systems that require a silicone-free synthetic fluid
require.
Specially developed for thermally highly stressed carbon and ceramic brakes in racing, reduces required air
inlets for brake cooling to a minimum.
Also for conventional brakes with steel discs and for conventional hydraulic clutch actuations
suitable.
Exceeds the requirements of DOT 3 and DOT 5.1 standards, except for viscosity at -40°C / -40°F.
Performance:
STANDARDS FMVSS 116 DOT 4
SAE J1703 / J1704
Extreme heat resistance and stability:
The very high dry boiling point of MOTUL RBF 660 FACTORY LINE (325°C / 617°F) exceeds the requirements of the silicone-free DOT 5.1 (260°C min / 500°F min) and DOT 4 (230°C min / 446°F mini) standards, enabling effective braking even under extreme conditions. It also improves aerodynamic performance by reducing the need for brake cooling air intakes on vehicles.
The very high wet boiling point of MOTUL RBF 660 FACTORY LINE (205°C / 401°F) exceeds the requirements of
Standards DOT 5.1 on a silicone-free basis (180°C min / 356°F min) and DOT 4 (155°C min / 311°F min) and thus enables efficient braking.
DOT 3, DOT 4 or DOT 5.1 brake fluids have the property of absorbing moisture from the air, which lowers their boiling point and increases the risk of "vapor lock" phenomena.
The wet boiling point is measured after the brake fluid has been enriched with 3% water to describe the condition of the fluid after approximately one year of use.
Characteristics:
Color: Brownish
Viscosity at 100°C 2.6 mm²/s
Viscosity at -40°C 1,698.0 mm²/s
Dry boiling point 325.0 °C / 617.0 °F
Wet boiling point 205.0 °C / 401.0 °F
Product safety:
Contains sensitizing substances. May produce an allergic reaction. For details, please check the bullet points above.
Safety data sheet available on request.
We receive a large number of custom orders and inquiries daily, so it's not always possible for us to have every item in stock at all times. If you need the item urgently, please contact us. here to our sales team, to check stock levels before making your purchase.
We completely understand if you are unsure whether a part is compatible with your car. Therefore, we strongly recommend that you contact your vehicle manufacturer here. Inquiry to us Please contact us. Our friendly sales team will then get in touch with you to confirm if this part is the correct one you are looking for.
All our products come with a standard 2-year warranty. However, this depends on the type of product. See details below. here.
At Upgrade my Car (R-Trade GmbH), we place great importance on fully informing our customers about the intended use of our products. Please note that, unless otherwise specified, all our products are specifically designed for professional racing use. They are intended exclusively for use in competitions on racetracks sanctioned by an officially recognized racing organization. We would like to point out that any use of our products outside of these conditions, including recreational off-road driving, may potentially violate local, state, or federal laws. It is important to understand that Upgrade my Car (R-Trade GmbH) assumes no liability for the legality of using our products on public roads. The responsibility for complying with applicable laws lies solely with the purchaser. We strongly recommend that our customers familiarize themselves with and comply with the relevant legal regulations before using our products.







