Castrol React SRF Racing Brake Fluid
The racers' choice—Castrol SRF is an ultra-high-performance brake fluid specifically developed for motorsports where extreme braking conditions are encountered. Used by top-tier racing teams worldwide, SRF is known for its outstanding heat resistance, anti-vapor lock properties, and superior ABS compatibility.

🔬 Key Features & Benefits:

✅ Dry Boiling Point: 590°F (310°C)
✅ Wet Boiling Point: 518°F (270°C)
✅ Low Hygroscopicity – Absorbs less water than typical glycol fluids
✅ Silicon-Ester Based – Chemically neutralizes absorbed water
✅ Superior Resistance to Vapor Lock – Consistent brake feel under extreme heat
✅ Foam Resistant – Ideal for ABS braking systems
✅ Exceptional High-Temp Stability – Suitable for high-performance metallic pads
✅ Packaged in a 1 Liter Easy-Pour Bottle

📦 Specifications:

• Volume: 1000ml (1L)
• Base Type: Non-silicone, silicon-ester (DOT3 / DOT4 compatible)
• Exceeds: SAE 1703, ISO 4925, JIS K2233, FMVSS No. 116 DOT 3 & DOT 4
• Compatible With: Most factory and aftermarket brake systems (not DOT 5)

⚠️ Notes:

• Do not mix with DOT 5 (silicone-based) fluids
• Best used in race, track day, or extreme performance conditions
• Replace fluid from a sealed bottle only
• Always follow vehicle manufacturer’s fluid specifications