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Product Categories - Brake Fluid - Performance Friction - Performance Friction Fluid


Performance Friction Fluid

Performance Friction Fluid

RH665 is not the same as other Racing Brake Fluids:

- Conforms to and exceeds FMVSS 116 DOT 4 Specifications

- Complex mixture of Glycol Ether Borate Ethers and Polyalkylene Glycol Ethers

- Guaranteed minimum Dry Boiling point - 325º

- Wet Boiling point Guaranteed to be above 195º

- Available in 500ml bottles


RH665 has been specially formulated for racing applications, where braking systems operate at very high temperatures. RH665 has a very high boiling point but still conforms to FMVSS 116 DOT 4 and maintains its class leading viscosity, lubricity and compressibility performance at extreme temps to ensure braking system reliability and performance and a rock hard pedal.


RH665 offers more than just guaranteed boiling points. With brake fluid it is essential to have the correct balance of properties to get good overall results. Low viscosity is very important to ensure a good bleed, low compressibility is essential for a firm pedal and lubricity is important for efficiency pedal return and life of the brake system.


RH665 has been tested and found compatible with all rubbers and metals commonly used in brake systems and will not damage them. It also means, or course, that RH665 is entirely street legal.

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