Disc Brake Fluid

RWD Racing brake fluid is not like any other bike brake fluid. Developed for motorsport racing applications, our proven formula is engineered to excel at very high operating temperatures.

Brake fluid is subjected to very high temperatures in disk brake calipers. It must have a high boiling point to avoid vaporizing in the lines. This vaporization is a problem because vapor is compressible and negates hydraulic fluid transfer of braking force.

Grades of Brake Fluid

RWD Racing Brake Fluid, Dot 4, Dot 5.1 and Mineral Oil
Dot 4 & Dot 5.1 Brake Fluid
Utilising a mix of Glycol Ether Borate Esters and Polalkylene Glycol Ethers antioxidants and corrosion inhibitors, results in an exceptional brake fluid with a high boiling point. They demonstrate class leading lubricity and viscosity with minimum compression across the operating range.
Dot 4 is a great all round fluid with a boiling point of 240°C
Dot 5.1 offers a higher range with a boiling point of 270°C

Mineral Oil
This is a petroleum based brake fluid. Mineral oil has a stable lifespan and will not absorb water like glycol based fluids. Any water entering a mineral oil system forms in pockets and may lead to corrosion. It is essential that mineral oil brake systems are flushed every 12-18 months to prevent any long term damage to your braking system.

Dot 4 RACING Brake Fluid
With a boiling point well in excess of 300°C, fluid boil and vapour lock should be a thing of the past. The low viscous property of our racing brake fluid is essential to ensure a good bleed, lubricity is vital for system efficiency and compression is the mark great performance every time you pull on the brake lever.
RWD Racing brake fluid conforms to DOT 4 specifications and is suitable for all glycol based systems. It is designed for racing applications but can be used as direct replacement for standard brake fluid

Brake fluid is not considered a "top up" fluid. If it is low, there is usually a problem. Brake fluid level in the master cylinder will drop as the pads wear and the pistons extend further to compensate. This added fluid may need to be removed when renewing pads. Overspill from pushing back pistons should be avoided, because glycol based fluid will quickly lift or strip paints and other coatings on contact (it can be removed by quickly washing with water, not wiping). Brake fluid level may also be low because of a leak, which could result in a loss of hydraulic pressure and consequently, a significant loss of braking ability.

Performance Data

RWD brake fluid water contamination data All glycol based brake fluid (Dot 4, Dot 5.1) absorb water over time. This contaminant has an effect on several characteristics but most noticeably on the brake fluid boiling point.
We recommend that the system is flushed and replaced annually to maintain the integrity of the operating specification.