---
product_id: 218679910
title: "Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml"
brand: "motul"
price: "¥3165"
currency: JPY
in_stock: false
category: "Motul"
url: https://www.desertcart.jp/products/218679910-motul-847205-rbf-660-factory-line-dot-4-100-percent
store_origin: JP
region: Japan
---

# Wet boiling point 205°C - superior wet braking Boiling point 325°C - extreme heat resistance Universal fit - racing & street ready Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml

**Brand:** motul
**Price:** ¥3165
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Stop at nothing with Motul RBF 660 – the ultimate brake fluid for champions!

## Quick Answers

- **What is this?** Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml by motul
- **How much does it cost?** ¥3165 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/218679910-motul-847205-rbf-660-factory-line-dot-4-100-percent)

## Best For

- motul enthusiasts

## Why This Product

- Trusted motul brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Minimized Air Intrusion:** Optimized formula reduces air entrance during brake cooling, enhancing aerodynamic efficiency.
- • **Universal Compatibility:** Engineered for hydraulic brake and clutch systems, compatible with carbon, ceramic, and steel discs.
- • **Exceeds Industry Standards:** Outperforms DOT 3, DOT 4, and DOT 5.1 specs for professional-grade reliability.
- • **Race-Proven Thermal Stability:** Withstands blistering 325°C boiling point for unbeatable brake performance under extreme heat.
- • **Superior Wet Braking Confidence:** High wet boiling point of 205°C ensures reliable stopping power even in heavy rain.

## Overview

Motul 847205 RBF 660 Factory Line is a 100% synthetic DOT-4 racing brake fluid designed for hydraulic brake and clutch systems. It boasts an exceptional dry boiling point of 325°C and a wet boiling point of 205°C, surpassing conventional brake fluids to deliver superior performance in extreme heat and wet conditions. Compatible with carbon, ceramic, and steel brake discs, it minimizes air intrusion for enhanced brake cooling and aerodynamic efficiency. Trusted by professionals, it exceeds DOT 3, 4, and 5.1 standards, making it the go-to choice for serious racers and performance enthusiasts.

## Description

This is used or hydraulic actuated brake and clutch systems requiring non-silicone synthetic fluid. It is specially designed to resist to extreme temperature generated by racing carbon and ceramic brakes allowing minimizing air entrance for brake cooling. It can be also used with conventional steel discs and clutch systems actuators. It widely exceeds DOT 3, DOT 4 and DOT 5.1 standards (except for DOT 5.1 viscosity at - 40 degree centigrade). It has extreme thermal resistance and stability due to very high boiling point (325 degree centigrade / 617 degree Fahrenheit), hence is superior to conventional DOT 5.1 non silicone base / DOT 5 silicone base fluids (260 degree centigrade / 500 degree Fahrenheit mini) and DOT 4 (230 degree centigrade / 446 degree Fahrenheit mini). This enables effective brake even in extreme conditions. Better aerodynamic performance by reducing air entrance for brake cooling on cars. It is efficient when rainy with very high wet boiling point (205 degree centigrade / 401 degree Fahrenheit) superior to conventional DOT 5.1 non-silicone base fluid (180 degree centigrade / 356 degree Fahrenheit mini) and DOT 4 (155 degree centigrade / 311 degree Fahrenheit mini) enables to keep efficient braking while rainy. Brake fluids tend to absorb humidity from the air, which reduce boiling point and increase the risk to get to "vapor lock" phenomena. The wet boiling point is measured by humidifying the product with about 3.5 percentage of water.

## Features

- RBF 660 Factory Line Dot-4 Synthetic Racing Brake Fluid
- This is used or hydraulic actuated brake and clutch systems requiring non-silicone synthetic fluid
- Item capacity- 500 ml

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004LF1U5O |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #122,494 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #27 in Brake Fluids |
| Brand Name | Motul |
| Container Type | Bottle |
| Country of Origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,672) |
| Flash Point | 204 Degrees Celsius |
| Global Trade Identification Number | 00182682992405, 03374650020501, 03374650235011 |
| Item Weight | 110 Grams |
| Liquid Volume | 500 Millilitres |
| Manufacturer Part Number | 101667 |
| Model | MTL101667 |
| UPC | 782645025470 182682992405 |
| Unit Count | 500.0 Milliliters |

## Product Details

- **Brand:** Motul
- **Flash Point:** 204 Degrees Celsius
- **Liquid Volume:** 500 Millilitres
- **Package Information:** Bottle
- **UPC:** 782645025470 182682992405

## Images

![Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml - Image 1](https://m.media-amazon.com/images/I/417cQClPyFL.jpg)
![Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml - Image 2](https://m.media-amazon.com/images/I/41AqZ8PxZnL.jpg)
![Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml - Image 3](https://m.media-amazon.com/images/I/41jaSVxh90L.jpg)
![Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml - Image 4](https://m.media-amazon.com/images/I/41J98RgZgxL.jpg)
![Motul 847205 RBF 660 Factory Line Dot-4 100 Percent Synthetic Racing Brake Fluid - 500 ml - Image 5](https://m.media-amazon.com/images/I/71jjj6Q8i-L.jpg)

## Questions & Answers

**Q: Will it mix with the non synthetic fluid?**
A: According to the Motul documentation: "Avoid mixing with polyglycols based brake fluid with lower performances. Do not mix with silicone (DOT 5 silicone base) or mineral base fluids (LHM)."

**Q: Can you use this on 04 subaru wrx as the amazon fitment is saying no?**
A: All Brake Fluid, including Motul 660, is a universal fluid that can be used in any motor vehicle's hydraulic brake system, including a Subaru WRX. However, Motul 660 is a much more expensive high temperature brake fluid designed for racing car applications on the race track where the brakes can glow red hot and regular specification brake fluid would boil and the brakes would fade. Unless you are racing your car or using the brakes really hard in repeated applications, you will not need such a higher specification and cost brake fluid like Motul 660.

**Q: Is it normal that its a little darker (darker shade of yellow)? Just used it to flush and replace oil fluid**
A: It will be darker when you flush brake system as it is mixing with the old brake fluid during the system bleed process.

**Q: What is the date format printed on the bottle and is this a manufacturing date or expiration date?**
A: Hi Robby,
Usually for the oil there is no expiration unless it is having contact with the air. As the brake fluid is hydroscopic, if you keep the bottle in cool, dry well ventilated place it should be good for a few years. The date is manufacturing date printed. Motul can answer better about it.
Regards.
Team 2to4wheels

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-09*