Due to the impact of Covid-19 on our courier partner, there will be delays freighting courier satchels and small parcels out of the Wellington Depot.

* E-Mail:

* First Name:

* Last Name:

Castrol React SRF Racing Brake Fluid 1L

Brand: Castrol
Availability: Call us to Pre-order
$139.99 Ex Tax: $121.73

Castrol React SRF brake fluid

Castrol React SRF Racing is a high performance brake fluid of special value in competitive motor sport where extreme braking conditions are encountered. It is an exclusive Castrol product registered under patents in many countries.

Castrol React SRF Racing meets US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JASO JIS K2233 and current SAE J 1703 specifications.


Castrol React SRF Racing is suitable for all disc and drum brake systems with the exception of those for which mineral oil is prescribed. It is miscible with all conventional fluids meeting US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925 and current SAE J 1703 and J1704. However, mixing with conventional brake fluids will merely reduce the higher quality of Castrol React SRF Racing and therefore recommended that conventional brake fluids be drained from the system before flushing and re refilling.

It is recommended that this fluid is changed every 18 months to maintain it's exceptionally high vapour lock performance.


Castrol React SRF Racing has an exceptionally high dry boiling point, typically 325°C, making it ideal for use under arduous braking conditions such as racing or rallying.

Castrol React SRF Racing has a very high vapour lock point (the more important measure of high temperature performance under actual braking conditions), and has the additional advantage of sustaining high vapour lock point characteristics during its service life.

In order to achieve the optimum benefits in such applications, advanced materials have been employed in a unique and patented Castrol formulation.

The properties of this formulation are such that in order to derive maximum benefit the use of Castrol React SRF Racing should be restricted to not more than eighteen months before draining and refilling.

Name Method Units Castrol React SRF Racing
Density @ 20C, Relative IP 160 g/ml 1.066
Appearance Visual - Yellow, Clear and Bright
Equilibriym Reflux Boiling Point ASTM D1120  °C 320
Wet Equilibrium Reflux Boiling Point SAE J1703 °C 270
Water ASTM D1123 % wt 0.15
Viscosity at -40°C ASTM D445 mm2/s 1300
Viscosity at 100°C ASTM D445 mm2/s 3.5


Write a review

Your Name:

Your Review: Note: HTML is not translated!

Rating: Bad           Good

Enter the code in the box below:

Related Products


Fill in your details below to sign up to our newsletter, you can unsubscribe anytime

Subscribe Cancel


Please click the confirmation link in the e-mail sent to you.

Contact Racetech
New Zealand

Please fill in the form below and we will contact you the next working day.

Send Cancel

Thank you

We will be in touch within one working day.