Oils, Fluids and Sealer Oils, Fluids and Additives

Motul

RBF 660 DOT 4 Racing Brake Fluid 500ml

$336.96

SKU: mot101667

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return

Overview

The Motul RBF 660 is a 500ml bottle of 100% synthetic racing brake fluid. It is a DOT 4 fluid designed for extreme temperature and racing applications.

This fluid offers extreme thermal resistance and stability with a very high boiling point of 325°C (617°F), exceeding conventional DOT 5.1 and DOT 4 fluids. It also features a high wet boiling point of 204°C (400°F), ensuring effective braking even in rainy conditions and reducing the risk of vapor lock.
Show original supplier description
The Motul RBF 660 Factory Line Brake Fluid is a 500ml bottle of 100% synthetic racing fluid engineered for extreme temperature and racing applications. It is suitable for all types of hydraulic brake and clutch actuators requiring a non-silicone synthetic fluid. This brake fluid boasts exceptional thermal resistance and stability, featuring a very high dry boiling point of 325°C (617°F), which surpasses conventional DOT 5.1 (non-silicone base), DOT 5 (silicone base), and DOT 4 fluids. Its superior performance ensures effective braking even under the most demanding conditions. Furthermore, the RBF 660 exhibits a very high wet boiling point of 204°C (400°F), significantly exceeding the requirements of DOT 3, DOT 4, and DOT 5.1 fluids. This characteristic guarantees consistent brake efficiency, particularly in wet conditions, and effectively mitigates the risk of vapor lock phenomena. The fluid is amber in color. It is important not to mix this fluid with silicone (DOT 5 silicone base) or mineral base fluids (LHM). This product fits a wide range of Audi models, including various A3, A4, A5, A6, Allroad, Q5, RS4, RS5, RS7, and S4 variants across multiple model years and engine configurations.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMotul
Part Numbermot101667
CategoryOils, Fluids and Sealer

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy