CMS RF1 DOT4 Racing Brake Fluid (500 ml) 1 "a"



CMS RF1 DOT4 Racing Brake Fluid (500 ml)




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Competition Motorsport RF1 fully synthetic Racing Brake Fluid is formulated to provide the highest, most reliable performance under racing and track-day conditions, where braking systems operate at very high sustained temperatures. RF1 exceeds all DOT 3 & 4 requirements and is compatible with all DOT 3, 4, and 5.1 fluids. (Not compatible with DOT5 or mineral-based brake fluids.)

There is perhaps no single safety system more important in racing than brakes. And no single part of that system is more critical than brake fluid. At Competition Motorsport, we got tired of (and a little nervous) using "racing" brake fluid on the track that didn't live up to its claimed performance when things got heated.

So we did something about it. Manufactured in partnership with the brake fluid supplier to many teams in Formula 1, WEC, and many other professional series, RF1 Racing Brake Fluid is formulated to maintain consistent viscosity, lubricity, and compressibility at extreme temperatures and line pressures found in racing, track days, and spirited driving.

Bottom line: you can spend more money, but you can't buy higher-performing racing brake fluid!



  • Typical dry boiling point: 622° F (328° C)
  • Typical wet boiling point: 399° F (204° C)
  • Exceeds DOT3 & DOT4 standards
  • Individual 500 ml (16.7 oz.) bottles


Click Here for Product MSDS Sheet

All brake fluid degrades over time (not mileage), attracting water as it ages, which, at high brake temperatures, can lead to fluid boil and brake fade or failure. That's why the "wet" (aged) boiling point of any brake fluid is substantially lower than the "dry" (new) boiling point.

To maintain maximum braking performance, Competition Motorsport strongly suggests replacing your brake fluid before every track event, but at least every three months if you're consistently racing and/or driving at track days. It's cheap insurance against learning about brake fade the hard way!

DOT4 Brake Fluid Comparison Chart

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